SBI 3U1-PERIOD 2 by Jocelyn Shih https://padlet.com/jocelyn_shih/rk2sqxo2tre1 ASK A QUESTION! FIND AN ANSWER! Task: record your question in the description of your post. Then, add a link, video or image that helps to answer this question. Thinking /2 Communication /2 Application /2 en-us 2018-10-11 13:42:18 UTC 2023-09-19 21:56:51 UTC hello@padlet.com Where did life begin on our planet? jocelyn_shih https://padlet.com/jocelyn_shih/rk2sqxo2tre1/wish/291758782 2018-10-11 14:41:48 UTC https://padlet.com/jocelyn_shih/rk2sqxo2tre1/wish/291758782 What was the first life form on land? jocelyn_shih https://padlet.com/jocelyn_shih/rk2sqxo2tre1/wish/291759306 2018-10-11 14:42:46 UTC https://padlet.com/jocelyn_shih/rk2sqxo2tre1/wish/291759306 What causes mass extinction? jocelyn_shih https://padlet.com/jocelyn_shih/rk2sqxo2tre1/wish/291759536 2018-10-11 14:43:05 UTC https://padlet.com/jocelyn_shih/rk2sqxo2tre1/wish/291759536 Can we see evolution in a short span of time? jocelyn_shih https://padlet.com/jocelyn_shih/rk2sqxo2tre1/wish/291759658 2018-10-11 14:43:17 UTC https://padlet.com/jocelyn_shih/rk2sqxo2tre1/wish/291759658 How did life emerge from non living things? - Julia Marinelli https://padlet.com/jocelyn_shih/rk2sqxo2tre1/wish/291759718 The origins of life on Earth is what is known today as abiogenesis. Abiogenesis is the gradual process of life evolving from non-living things. Although there are many theories that involve the beginning of this process, none of which are able to be scientifically supported due to the lack of evidence. Stanley Miller’s theory regarding the creation of living things is one of the most agreed upon. It states that over billions of years, with an input of energy, molecules had the ability to self replicate into molecular structures of cells. ]]> 2018-10-11 14:43:22 UTC https://padlet.com/jocelyn_shih/rk2sqxo2tre1/wish/291759718 What is Charles Darwin's theory? -Taya Zorbas https://padlet.com/jocelyn_shih/rk2sqxo2tre1/wish/291759801 Charles Darwin's theory (Social Darwinism) states that over billions of years all living things evolved from one common ancestor and humans are all connected and related to each other. He also proposed a theory of evolution by natural selection, where weaker species do not survive. This is known as survival of the fittest. This theory demonstrated that species can change over time, based on their ability to adapt to changes in their environment over time.]]> 2018-10-11 14:43:30 UTC https://padlet.com/jocelyn_shih/rk2sqxo2tre1/wish/291759801 Will humans evolve any further? -Mikaila https://padlet.com/jocelyn_shih/rk2sqxo2tre1/wish/291759816 The article I found says that every single living thing on Earth is constantly evolving, to some extent. The progress for humans is just very slow, which is why some changes may not be evident right away. 
An example of this is drinking milk. We shouldn't be able to drink milk past infancy because the lactase/LCT gene (which helps us digest lactose) is supposed to "turn off" after infancy. Years ago, a mutation caused some people to be able to digest lactose even after infancy and now the trait has passed on to more people. Some people still can't digest lactose, but it is becoming more popular than before.
The article also talks about how tall the men in the Netherlands are-- simply because the women prefer taller men, so they produce more babies with taller men, to make more tall men. Height has also increased in other countries, but is very significant in the Netherlands.
The article ends with the line, "Over time, almost everything changes a little. We just have to pay attention."
Therefore, humans are still evolving, constantly, with very small changes happening. Maybe more people will be able to digest milk, and people will get even taller. Only time can tell what exactly is going to change, but change is happening.]]> 2018-10-11 14:43:33 UTC https://padlet.com/jocelyn_shih/rk2sqxo2tre1/wish/291759816 Will humans keep evolving? -Liza https://padlet.com/jocelyn_shih/rk2sqxo2tre1/wish/291760495 Humans are still evolving, and there is more and more evidence to support this claim. However, because humans do not reproduce fast, like for example, bacteria, this change is difficult to see. Researchers did a massive genetic study with 215,000 individuals, and the results showed that a number of genes that makes you predisposed to Alzheimer's disease are becoming more uncommon. ]]> 2018-10-11 14:44:38 UTC https://padlet.com/jocelyn_shih/rk2sqxo2tre1/wish/291760495 How do we have such a diverse wildlife even though we all evolved from the exact same primordial soup? -Jayson https://padlet.com/jocelyn_shih/rk2sqxo2tre1/wish/291760655 The theory on primordial soup is a more or less recent discovery that is not fully known to this day having many doubts upon its legitimacy. It is said to have started over 14 million years ago 

]]> 2018-10-11 14:44:54 UTC https://padlet.com/jocelyn_shih/rk2sqxo2tre1/wish/291760655 How did the world go from non-living to living things? -Veronica https://padlet.com/jocelyn_shih/rk2sqxo2tre1/wish/291760675 The study of how life on Earth originated as inanimate matter is called Abiogenesis. It involves the formation of the simplest forms of life from primordial chemicals.]]> 2018-10-11 14:44:56 UTC https://padlet.com/jocelyn_shih/rk2sqxo2tre1/wish/291760675 Will humans ever go extinct due to a massive change in the environment? -Julian https://padlet.com/jocelyn_shih/rk2sqxo2tre1/wish/291760835 Human extinction is the end of hypothetical end of humans. This may result in natural causes or in result of human action ]]> 2018-10-11 14:45:09 UTC https://padlet.com/jocelyn_shih/rk2sqxo2tre1/wish/291760835 If humans evolved from animals with tails then why do we still have a tailbone if we don't have/need a tail anymore? - Lorriane https://padlet.com/jocelyn_shih/rk2sqxo2tre1/wish/291760855 The "Tail bone" is a fully functional part of the system of bones, ligaments and muscles of the pelvis. The "tailbone" is actually called a coccyx. It protects and supports the pelvic organs, and contributes to our upright stance and walking. The nickname "tail bone" comes from Charles Darwin who believed it was a useless bone that remained in our bodies from our monkey-like evolutionary ancestors. ]]> 2018-10-11 14:45:11 UTC https://padlet.com/jocelyn_shih/rk2sqxo2tre1/wish/291760855 Will humans continue to evolve and is there any evidence against evolution? - Marco https://padlet.com/jocelyn_shih/rk2sqxo2tre1/wish/291760881 Humans are still evolving, and it's arguably happening faster than ever. Researchers have found evidence of natural selection in humans, including our ability to  withstand ultraviolet light form the sun, our ability to function in regions with low oxygen levels, and our protection from infectious changes. Additional proof of evolution is the fact that humans were unable to digest milk around 11,000 years ago. Today, there is a much smaller part of the population who are lactose intolerant.



The second part of the question is whether or not there is any evidence against evolution.  ]]> 2018-10-11 14:45:13 UTC https://padlet.com/jocelyn_shih/rk2sqxo2tre1/wish/291760881 Will the concept of natural selection eventually die out? -Kate https://padlet.com/jocelyn_shih/rk2sqxo2tre1/wish/291760997 Darwin's theory of evolution and natural selection was the building block of how all life forms on earth came to be. Although that is true, recent evidence from the past 20 years shows that the concept of natural selection has some holes and misunderstandings. Natural selection could be dying out and its because of human innovation. Humans are evolving and expanding in their own ways with technology to decrease death rates and improve quality of life. Mutations with animals, experiments with medicine, and other inventions by innovation can change the course of mankind without natural selection so that future generations may not even evolve 100% from humans. ]]> 2018-10-11 14:45:24 UTC https://padlet.com/jocelyn_shih/rk2sqxo2tre1/wish/291760997 Which came first...the chicken or the egg? - Emily https://padlet.com/jocelyn_shih/rk2sqxo2tre1/wish/291761144 The first chicken to ever exist was a result of a mutation in the zygote created by 2 creatures that were almost genetically identical to chickens (a proto-chicken). The mutation that occurred in the egg of the proto-chicken combined the DNA of both proto-chickens to form the first true chicken.]]> 2018-10-11 14:45:39 UTC https://padlet.com/jocelyn_shih/rk2sqxo2tre1/wish/291761144 How can the evolution of one species affect the evolution of another? - https://padlet.com/jocelyn_shih/rk2sqxo2tre1/wish/291761257 No species exist every form of life on Earth interacts over time with other organisms. As well as with its physical environment. For that reason, the evolution of one species influences the evolution of species with which it coexists by changing the natural selection. The classic examples of this sort of evolution, called , are predator-prey and host-parasite relationships. ]]> 2018-10-11 14:45:50 UTC https://padlet.com/jocelyn_shih/rk2sqxo2tre1/wish/291761257 Are humans still evolving? Will we ever stop? Julia Vassallo https://padlet.com/jocelyn_shih/rk2sqxo2tre1/wish/291761290 Charles Darwin once said, "A grain in the balance will determine which individual shall live and which shall die.” It is this grain of salt whether it is an illness, blood disorder, physical abnormality or a single variant gene that can determine our survival. Humans have continued to evolve slowly over many years, giving us the ability to adapt to our environments. Evidence that proves our evolution include the recent emergence of different blood disorders, our ability to tolerate milk, and various physical differences all contribute to our constant evolution. Recently, researchers have found people in Africa with blood types outside the more common ABO blood types, having three different types of alleles. We are noticing that the more common bloodtypes in certain continents, I.E. type B blood in Asia, are becoming common in countries where it wasn't many years ago. With this evolution of our blood comes new blood disorders such as sickle cell anemia. Once a life threatening disease ]]> 2018-10-11 14:45:54 UTC https://padlet.com/jocelyn_shih/rk2sqxo2tre1/wish/291761290 Was Charles Darwin's theory right?- J.R. https://padlet.com/jocelyn_shih/rk2sqxo2tre1/wish/291761308 His theory states that all species of organisms develop through the natural selection of small, inherited variations that increases the individual's ability to compete, survive, and reproduce.

]]> 2018-10-11 14:45:55 UTC https://padlet.com/jocelyn_shih/rk2sqxo2tre1/wish/291761308 What is an example of artificial selection? -Marcus https://padlet.com/jocelyn_shih/rk2sqxo2tre1/wish/291761511 Artificial selection is the process in which desired traits are produced. Animals such as dogs who are cross-bred, or cows that produce more milk, as well as plants that have a desired taste or smell, are all examples of artificial selection. Humans are the ones to decide what is created in artificial selection, rather than nature deciding. ]]> 2018-10-11 14:46:15 UTC https://padlet.com/jocelyn_shih/rk2sqxo2tre1/wish/291761511 If humans evolved from monkeys, why do they still exist? -Kiana https://padlet.com/jocelyn_shih/rk2sqxo2tre1/wish/291761558 According to an article by Dr. Paul Willis, entitled "If Evolution Is Real Why Are There Still Monkeys?" Humans did not actually evolve from monkeys. Instead, they both share a common ancestor from which evolved about 25 million years ago. Based on the similarities and differences between the two types of DNA, scientists have estimated that humans and monkeys diverged from their common ancestor 25 million years ago. Which explains why monkeys continue to exist. ]]> 2018-10-11 14:46:20 UTC https://padlet.com/jocelyn_shih/rk2sqxo2tre1/wish/291761558 What is the evidence of human evolution? - shivangi https://padlet.com/jocelyn_shih/rk2sqxo2tre1/wish/291761621 2018-10-11 14:46:27 UTC https://padlet.com/jocelyn_shih/rk2sqxo2tre1/wish/291761621 Are Humans Still Evolving? -Sydney https://padlet.com/jocelyn_shih/rk2sqxo2tre1/wish/291761701 Yes, we are still evolving and this can be seen through ]]> 2018-10-11 14:46:36 UTC https://padlet.com/jocelyn_shih/rk2sqxo2tre1/wish/291761701 How did life begin on earth and what was the first living thing on our planet? https://padlet.com/jocelyn_shih/rk2sqxo2tre1/wish/291762885 2018-10-11 14:48:40 UTC https://padlet.com/jocelyn_shih/rk2sqxo2tre1/wish/291762885 Can evolution occur in a short period of time? Nicholas Knezeh https://padlet.com/jocelyn_shih/rk2sqxo2tre1/wish/291764572 No, evolution is a process of changing and adapting to ones environment and surroundings. Many scientists and researchers found that lasting evolutionary change is a very lengthy process that can take up to or more than one million years. Small forms of evolution have taken place in the last few hundred years. For example, humans are now 2-3 inches taller than they were 300 years ago, and many scientists may use this data to predict what will happen next, but this is very difficult as just because humans are 2 inches taller than they were 300 years ago does not mean that we will be 2-3 feet taller in 3000 years. ]]> 2018-10-11 14:51:35 UTC https://padlet.com/jocelyn_shih/rk2sqxo2tre1/wish/291764572 What is difference between natural selection and artificial selection? -Meline https://padlet.com/jocelyn_shih/rk2sqxo2tre1/wish/291764613 First of all, evolutionary selection is the process where traits are selected for or against and become more or less abundant 
....not done]]> 2018-10-11 14:51:39 UTC https://padlet.com/jocelyn_shih/rk2sqxo2tre1/wish/291764613 How did life form after dinosaurs became extinct? -Noelle https://padlet.com/jocelyn_shih/rk2sqxo2tre1/wish/291764703 When an asteroid crashed into the Earth 66 million years ago, it killed almost 90% of the species living on it. The small percent of the population that survived this mass extinction were mainly small mammals, marine life, and insects. It took nearly 30, 000 years for life on the planet to bounce back. First small insects began to adapt to living on land. Then marine life slowly adapted and began to mate. Evolution occurred over long periods of time and many of the marine life adapted to be able to live on land as well as the sea. An example for this is the alligator, who can live in swamps and marshes and large bodies of water, but can also hunt on land. Scientists also discovered nannoplankton deep beneath the Earth's crust and it is believed that these small bacteria managed to stay alive even 5 million years after the meteor hit the Earth and started reproducing again when conditions were better. After the nannoplankton began to mate, other organisms that survived the asteroid that wiped out much of the dinosaurs began to do the same. Since there was very little species of organisms, many of these organisms had to evolve and change to adapt and survive to the harsh new environment. Eventually after millions of years of evolution, a majority of the species that survived have changed and grown into many of the mammals we are familiar with today. ]]> 2018-10-11 14:51:47 UTC https://padlet.com/jocelyn_shih/rk2sqxo2tre1/wish/291764703 What is the difference between Natural Selection and Artificial Selection? -Meline https://padlet.com/jocelyn_shih/rk2sqxo2tre1/wish/291922443 First of all, evolutionary selection is the process where traits are selected for or against and become more or less abundant in the population. To start off with basic definition in my own words, natural selection is what natures chooses at its best, while the artificial selection is what humans choose on the basis of its requirements.                  NATURAL SELECTION:  An organism is selected naturally, which is able to cope up and is adaptable to all kind of situations like variations in weather, temperature, shelter, gaining of nutrition, genetic drift, etc.
However, there must be variation in the population for example; brown beetles vs green beetles of the same species.
IT'S NATURE THAT SELECTS
ARTIFICIAL SELECTION: involves unnatural selection or selective breeding, with the interference of human activity. An organisms with the desired traits are been selected and further, they are been genetically modified with the advancing technologies evolving in biology. 
IT'S HUMANS THAT SELECT]]> 2018-10-11 19:08:02 UTC https://padlet.com/jocelyn_shih/rk2sqxo2tre1/wish/291922443 How can the evolution of one species affect the evolution of another? Ashley https://padlet.com/jocelyn_shih/rk2sqxo2tre1/wish/291949137 No species exist every form of life on Earth interacts over time with other organisms. As well as with its physical environment. For that reason, the evolution of one species influences the evolution of species with which it coexists by changing the natural selection. The classic examples of this sort of evolution, called , are predator-prey and host-parasite relationships. ]]> 2018-10-11 20:14:18 UTC https://padlet.com/jocelyn_shih/rk2sqxo2tre1/wish/291949137 Was Charles Darwin's theory correct?- J.R. https://padlet.com/jocelyn_shih/rk2sqxo2tre1/wish/291957970 Charles Darwin’s theory is correct for the most part, like how natural selection works within and creates new species, and how he has evidence to support the theory. However, there are some where things are wrong, for example, he proposed that Earth’s age was about 100 million years old. Also, he proposed a theory about the mechanisms of variation among individuals like how a child bore a stronger resemblance to one parent than to the other because the gemmules coming from one parent may be stronger, better adapted, or more numerous than those coming from the other parent. However, this was removed from his theory because during an experiment his cousin used rabbit blood to test if it was true, but it failed to find the gemmules.
https://www.britannica.com/list/what-darwin-got-right-and-wrong-about-evolution

]]> 2018-10-11 20:44:00 UTC https://padlet.com/jocelyn_shih/rk2sqxo2tre1/wish/291957970 Can Evolution occur in a short period of time? - Nicholas Knezeh https://padlet.com/jocelyn_shih/rk2sqxo2tre1/wish/291966160 No, evolution is a process of changing and adapting to ones environment and surroundings. Many scientists and researchers found that lasting evolutionary change is a very lengthy process that can take up to or more than one million years. Small forms of evolution have taken place in the last few hundred years. For example, humans are now 2-3 inches taller than they were 300 years ago, and many scientists may use this data to predict what will happen next, but this is very difficult as just because humans are 2 inches taller than they were 300 years ago does not mean that we will be 2-3 feet taller in 3000 years. Evolution is usually thought to be a slow process, something that happens over generations, thanks to adaptive mutations. But nowadays environmental change is happening at a very rapid pace that we are evolving a little quicker than before. But in the end evolution that incorporates noticeable and large changes takes a long period of time. Not in just one or two generations.]]> 2018-10-11 21:14:32 UTC https://padlet.com/jocelyn_shih/rk2sqxo2tre1/wish/291966160 Are Humans Still Evolving? -Sydney https://padlet.com/jocelyn_shih/rk2sqxo2tre1/wish/291974152 The simple answer would be yes. Our current evolution can be due to genetic mutations and the environment around us. For instance, 11,000 years ago adult bodies had no way of digesting lactose that is found in milk. However, farmers had to rely on milk as their source of nutrients and their bodies adjusted to it; and that is why most adults are able to drink milk nowadays. For the next example, we are going to look at the height of Dutch people. These people are tallest population in the world. How they became so tall you ask? Evolution. In the 18th century, they were of average height (165cm) but now they have an average height of 183cm. This is due to the fact that Dutch women favour taller men and had many children with them, leaving the shorter men to dust- thus resulting in taller children that only get taller with each generation.These examples are only few of how much humans continue to evolve and with new genetic mutations, we will grow.
https://www.medicalnewstoday.com/articles/321942.php ]]> 2018-10-11 21:57:08 UTC https://padlet.com/jocelyn_shih/rk2sqxo2tre1/wish/291974152 lil brain thought-woah vicki https://padlet.com/jocelyn_shih/rk2sqxo2tre1/wish/291979478 “Happy birthday to you…..you smell like a monkey and you look like one too!” this playful happy birthday song reminds us that humans have evolved physically from apes, but the question is have our brain evolved?
Humans are known to have “mega minds”, but how did our mega minds develop? For mammals our size, we are said to have double the expected brain size! Across nearly seven million years, the human brain has tripled in size, with most of this growth occurring in the past two million years. Scientists look at ancient skulls in order to get evidence about the volumes of the ancient brains and some details about the relative sizes of major cerebral areas. For the first two thirds the size of our ancestors, brains were the size of apes brains today. The last third of our evolution is where the brain size changed drastically. 🤬 habilis, the first of our genus 🤬 who appeared 1.9 million years ago, saw a modest jump in brain size.Early 🤬 sapiens had brains within the range of people today,As our cultural and linguistic complexity, dietary needs and technological prowess took a significant leap forward at this stage, our brains grew to accommodate the changes. The shape changes we see accentuate the regions related to depth of planning, communication, problem solving and other more advanced cognitive functions. So use your big brains kids! We have don't have big heads for peanut brains:)
link:https://www.scientificamerican.com/article/how-has-human-brain-evolved/
]]> 2018-10-11 22:33:05 UTC https://padlet.com/jocelyn_shih/rk2sqxo2tre1/wish/291979478 Which came first...the chicken or the egg? - Emily https://padlet.com/jocelyn_shih/rk2sqxo2tre1/wish/291981130 The first chicken to ever exist was the result of a mutation in the zygote created by 2 creatures that were almost genetically identical to chickens (a proto-chicken). The mutation that occurred in the egg of the proto-chicken combined both of their DNA to form the first true chicken. However, it is not likely that a chicken was formed right away from just one genetic mutation, just like how giraffes did not all of a sudden have long necks because of one genetic mutation. It was a gradual process, where slight genetic mutations over many generations and many years eventually led to the chicken that exists in our world today, just as giraffes slowly started being born with slightly longer necks leading to long-necked giraffes after millions of years. Either way, whether the chicken was created from 2 proto-chickens after 1 genetic mutation, or several mutations over many many years, the egg would have had to existed before the chicken no matter what.]]> 2018-10-11 22:47:22 UTC https://padlet.com/jocelyn_shih/rk2sqxo2tre1/wish/291981130 How did the world go from non-living to living things? -Veronica https://padlet.com/jocelyn_shih/rk2sqxo2tre1/wish/291981466 The study of how life on Earth originated as inanimate matter is called Abiogenesis. It involves the formation of the simplest forms of life from primordial chemicals. Single-celled micro-organisms, prokaryotes, were the first living things on Earth and had first appeared almost 4 billion years ago. This was just a few hundred million years after the formation of Earth itself occurred. Individualized fossils are found in rocks that are 3.4 billion years old, but multi-celled fossils have only been identified in rocks that are less than a billion years old. It is believed that over millions of years of evolution, prokaryotes evolved into self-replicating molecules through natural selection. Many aspects of the study of the origin of life on Earth are still not fully understood, leaving us with various theories on the subject. Some theories include: Theory of Special Creation (life created by a super natural power), Cosmozoic Theory (life came to Earth from heavenly bodies such as planets and stars), Theory of Spontaneous Generation (abiogenesis). Scientists have yet to succeed in synthesizing a protocell using the basic components that would have the necessary properties of life.

Useful Link for More Info About Abiogenesis:
https://www.britannica.com/science/abiogenesis

]]> 2018-10-11 22:50:01 UTC https://padlet.com/jocelyn_shih/rk2sqxo2tre1/wish/291981466 Are humans still evolving? What proof is their to prove our evolution? Julia Vassallo https://padlet.com/jocelyn_shih/rk2sqxo2tre1/wish/291982150
Charles Darwin once said, "A grain in the balance will determine which individual shall live and which shall die.” It is this grain of salt whether it is an illness, blood disorder, physical abnormality or a single variant gene that can determine our survival. Humans have continued to evolve slowly over many years, giving us the ability to adapt to our environments. Evidence that proves our evolution include the recent emergence of different blood disorders, our ability to tolerate milk, and various physical differences which all contribute to our constant evolution. Recently, researchers have found people in Africa with blood types outside the more common ABO blood types, having three different types of alleles. We are noticing that the more common blood types in certain continents, I.E. type B blood in Asia, are becoming common in other countries where it wasn't many years ago. With this evolution of blood comes new blood disorders such as sickle cell anemia. Once a life threatening disease, now has lower death rates due to a gene mutation present throughout generations that helps fight malaria. Secondly, the ability to digest milk is also proof of evolution because the enzymes needed to break down the chemicals is usually only present in younger ages. Over time, some humans have built up a tolerance for milk since our DNA and the allele that controls lactase/LCT has been altered. It began in countries where people relied on constant dairy in order to survive showing humans adapt in order to withstand environmental changes. This ability to have lactase was then passed down generation to generation and improved with time. With constant environmental changes, humans have learned to adapt by evolving, and will only continue to grow with time.

https://www.the-scientist.com/features/humans-never-stopped-evolving-33115
  
]]> 2018-10-11 22:54:50 UTC https://padlet.com/jocelyn_shih/rk2sqxo2tre1/wish/291982150 Will humans keep evolving? -Liza https://padlet.com/jocelyn_shih/rk2sqxo2tre1/wish/291985242 Similarly, various gene groups that predispose people to asthma, coronary artery disease,  a high body mass index, and higher cholesterol seem to become more uncommon. Researchers believe that this might be because these predispositions impact the likelihood of having children earlier.  This is very subtle, and it is because the progress doesn't happen over a generation or two - it takes a very long time.  Another example of this evolution is the ability to digest milk. In theory, humans shouldn't be able to digest milk past infancy, and most adults today can't digest milk. As babies, our lactase gene is turned on , allowing us to digest milk, but as we grow, this gene is supposedly turned off. However, several thousands of years ago, the ability to digest milk came to be an advantage, due to its nutritional value. Some individuals happened to have a mutation that allowed the lactase gene to remain active,  and these people tended to have a better life with more children. Their children would get this genetic mutation, and so it spread. All of this evidence confirms the question of whether humans are still evolving. Humans are experiencing the slightest changes in their genetics, which over a long period of time results in their evolution.

https://www.popsci.com/humans-are-still-evolving#page-2 ]]> 2018-10-11 23:21:18 UTC https://padlet.com/jocelyn_shih/rk2sqxo2tre1/wish/291985242 What is the evidence of Human evolution? shivangi https://padlet.com/jocelyn_shih/rk2sqxo2tre1/wish/291989786 Scientists have gathered many evidence of human evolution through fossils. Early human fossils have been found of more than 6,000 individuals. Researchers study the changes in physical human size compared to human structure now. Researchers have found that there has been a pattern of growth in brain size as well as reduction of face size. By studying these fossils scientists can also confirm that humans are a part of diverse human family tree. The evolution of human species is not with one after the next, but a big family tree with many deeper branches. Though now we are the only surviving species of this family tree. Research has shown that there were even periods in history when different human species lived together at the same time. Scientist have also studied an evolution in the behavior of humans over time. Through footprints, stone tools, shelter, art, clothing scientist are able to see the change of humans thought process. Over the last 100,000 years to the present, there have been markings on some of the stone technologies, bones, and many other different objects. These markings show that humans began a symbolic state using language and numbers to interact and benefit themselves. These artifacts show a physical and mental change over time, showing the evolution of the human species from the start to the present  


]]> 2018-10-12 00:01:48 UTC https://padlet.com/jocelyn_shih/rk2sqxo2tre1/wish/291989786 Will humans ever go extinct due to a massive change in the environment? -Julian https://padlet.com/jocelyn_shih/rk2sqxo2tre1/wish/291990329 Human extinction is the end of hypothetical end of humans. This may result in natural causes or in result of human action. Human extinction is unprecedented, speculation about the probability of different scenarios is highly subjective. Nick Bostrom argues that it would be "misguided" to assume that the probability of near-term extinction is less than 25% and that it will be "a tall order" for the human race to "get our precautions sufficiently right the first time", given that an existential risk provides no opportunity to learn from failure.]]> 2018-10-12 00:06:42 UTC https://padlet.com/jocelyn_shih/rk2sqxo2tre1/wish/291990329 What ideas compete with evolution to explain population changes? - Rose https://padlet.com/jocelyn_shih/rk2sqxo2tre1/wish/291994465 There are many theories that give multiple ideas such as natural selection, speciation and adaption and evolution regarding population change and although scientists support the idea of evolution, they do not accept that natural selection is the primary mechanism involved. A man named Charles Darwin thought otherwise, he believed that a mechanism for evolution was natural selection. Natural selection is a a function of the effect of inherited traits on the differential reproductive success of organisms interacting with their environment. Evolution is viewed and accepted as the main ideology behind population changes because the idea of biological evolution is that populations, species and organism change over time.https://www.khanacademy.org/science/biology/her/evolution-and-natural-selection/a/darwin-evolution-natural-selection ]]> 2018-10-12 00:40:44 UTC https://padlet.com/jocelyn_shih/rk2sqxo2tre1/wish/291994465 Is there any evidence against evolution? - Marco https://padlet.com/jocelyn_shih/rk2sqxo2tre1/wish/291999531
There are arguments that try and disprove evolution, but every argument has a counterpoint that backs up Darwin's theory. For example, one argument is that evolution cannot be seen by anybody. However, as we know, evolution doesn't happen overnight and can take millions and sometimes billions of years. Another argument is that evolution is unable to explain the origins of life, and while this is true, it's not supposed to. Evolution is meant to explain life's development SINCE life forms came onto Earth. Here are two articles that discuss arguments against evolution along with their counterpoints: https://owlcation.com/stem/6-Stupid-Arguements-Against-Evolution-That-Just-Wont-Die]]> 2018-10-12 01:09:09 UTC https://padlet.com/jocelyn_shih/rk2sqxo2tre1/wish/291999531 How can evolution be scientific if it can't be tested and none of the events can be observed of recreated? - Shahrzad https://padlet.com/jocelyn_shih/rk2sqxo2tre1/wish/292000254 Like any other scientific theory, evolutionary science is built on observation and collection of evidence. Evolution is divided into two main areas:
- Micro-evolution: using lab tests and observing changes within species overtime (small scale)
organism --> more specialized species of the organism 
- Macro-evolution: examining collected evidence provided by fossils and DNA to see how various organisms might be related 
organism --> completely different kind of organism 

So evolution CAN be observed. Evidence is not limited to seeing something happen before your eyes. Even though we have not observed an animal changing into a radically different one, we have collected evidence from fossils and DNA that prove evolution is true. 

]]> 2018-10-12 01:14:07 UTC https://padlet.com/jocelyn_shih/rk2sqxo2tre1/wish/292000254 How did the first living thing on earth appear? -Valentina https://padlet.com/jocelyn_shih/rk2sqxo2tre1/wish/292006238 We do not know for sure exactly how life began on earth. This is a question that is still being researched However there are many theories that can help to explain it. One theory is that life started with chemistry 
since life is powered by normal chemical reactions. It is thought that life came from nonliving chemistry through a process known as chemical evolution. the way that chemical evolution works is that the simplest forms of molecules interact with each other to make more complex molecules when they are left alone with some from of energy such as heat. Then chains of chemical reactions occur and they resemble very closely the pathways to form life.  Some people also think that a meteorite brought life into our planet since meteorites are known to have amino acids and sugars on them which are the building blocks for life. So they think that this meteorite brought these amino acids and sugars to our planet and that they existed on our old earth and eventually helped form life.


]]> 2018-10-12 01:55:15 UTC https://padlet.com/jocelyn_shih/rk2sqxo2tre1/wish/292006238 https://padlet.com/jocelyn_shih/rk2sqxo2tre1/wish/292027910 2018-10-12 04:52:42 UTC https://padlet.com/jocelyn_shih/rk2sqxo2tre1/wish/292027910