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http://www.brightstorm.com/science/biology/evolution/darwins-theory-of-evolution/

Evolution is when organisms undergo a genetic change due to natural selection

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http://www.brightstorm.com/science/biology/evolution/darwins-theory-of-evolution/

Evolution is when organisms undergo

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Evolution explains how species that are present on earth today are modified descendants of their ancestors

Sylvia montalvan

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http://study.com/academy/lesson/scientific-evidence-that-supports-evolution.html Evolution explains how species that are present on Earth today are modified descendants of their ancestors. This scientific theory is supported by many different types of evidence, which show how evolution is a very real and natural phenomenon

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http://study.com/academy/lesson/scientific-evidence-that-supports-evolution.html Evolution explains how species that are present on Earth today are modified descendants of their ancestors. This scientific theory is supported by many different types of evidence, which show how evolution is a very real and natural phenomenon

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Spices living today are descendants of species from long ago

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http://study.com/academy/lesson/evidence-for-evolution-paleontology-biogeography-embryology-comparative-anatomy-molecular-biology.htm

Alan & Deannal

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This talks about how evolution started

Dante&Devin

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Evolution Is Based on Evidence

No doubt you have heard of evolution. It's a hotly debated topic right now, and there are some strongly opposing viewpoints on whether it is real or not. Evolution is the idea that all species on Earth are descendants of ancestors that were different from themselves.

This definition is not what comes under fire; rather it's the validity of evolution itself. Evolution is a scientific theory, and when people hear the word 'theory,' they tend to think of an 'idea' or 'generalization.' Basically, something that's not concrete or scientifically founded.

But a scientific theory is very different because it is a thoroughly tested and overwhelmingly accepted explanation of natural phenomena. Because evolution is a scientific theory, it is just as valid as Newton's theory of gravity and Einstein's theory of relativity. You sure don't hear those being questioned!

The reason evolution warrants such high merit is because it is scientifically supported. There are several different types of evidence that support evolution. These include biogeography, comparative anatomy, and molecular biology. Let's take a closer look at each.

Biogeography

Charles Darwin was a very observant man. Something that he paid very close attention to was the similarities and differences of various organisms and how they were spread around the world. This geographic distribution of species is called biogeography - 'bio' for 'life' and 'geography' for 'lands.'

It was biogeography that first triggered the idea of evolution for Darwin. He noticed that certain species on islands looked much more like the species on the nearby mainland than species on other islands farther away. This seems somewhat counterintuitive at first. Islands are similar environments; therefore, island species should resemble each other because their habitats resemble each other.

But instead, what this tells us is that island species are more closely related to species on the mainland. They once lived in the same habitat, but over time, as the islands broke free and became more isolated, the island species evolved into different species from their mainland relatives. And we can see examples of this all over the world. For example, the Galapagos tortoise is more closely related to the chaco tortoise on the main continent of South America than any tortoises you might find on other islands that have habitats similar to the Galapagos.

Another example, the marsupials in Australia, are a unique group of species that are found nowhere else on Earth. Australia was once connected to the rest of the continents but some time ago broke off and became geographically isolated. It's because of this isolation that animals, such as kangaroos and koalas, were able to evolve separately from other common types of mammals that we find on more connected continents, like Asia or North America.

Madagascar is another isolated island and was once part of Africa. There are species on Madagascar that are found nowhere else on Earth. If all 'island' species were similar because of their similar environments, then we would expect to find the species of Madagascar (as well as Australia) on other islands spread throughout the world. However, this is not the case. Even though these species are very distant relatives of African species, they are more closely related than they would be to species found on other islands with similar environments.

Comparative Anatomy

Darwin was also very observant of various structures on organisms, noticing that some species had similar body features while others were quite different. This study of differences and similarities in structures is called comparative anatomy because you are literally comparing the anatomy of various organisms.

Darwin found that even if they served a different function, many species had body features that were structurally alike. This indicated to him that the structures came from a common ancestor. These homologous features were very well studied by Darwin, and even today still scientifically provide evidence for evolution.

For example, many mammals have distinct similarities in their arm or forelimb. Whales, bats, cats, and humans all use their forelimb for very different functions: whales swim, cats walk, bats fly, etc. But when you get down to the skeletal structure, the design is strikingly similar. This indicates that all of these mammals are descendants of a common ancestor that also had a forelimb, though its function is something we can only speculate about.

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scientific evidence that supports evolution - video & lesson transcript | study.com

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Scientific Evidence That Supports Evolution - Video & Lesson Transcript | Study.com

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No doubt you have heard of evolution. It's a hotly debated topic right now, and there are some strongly opposing viewpoints on whether it is real or not. Evolution is the idea that all species on Earth are descendants of ancestors that were different from themselves.

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http://study.com/academy/lesson/scientific-evidence-that-supports-evolution.html

Sylvia montalva

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http://study.com/academy/lesson/scientific-evidence-that-supports-evolution.html

In the video the last explains how Evolution is a reasonable theory . And explains what evolution is & why it is considered a theory. It explain how humans started off. And some animals that went through evolution.

Ashly Ramirez & Olivia

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http://study.com/academy/lesson/evidence-for-evolution-paleontology-biogeography-embryology-comparative-anatomy-molecular-biology.html

Throughout this video it talked about how Darwin had a theory about how humans evolved from other animals some evidence that proves his theory is that there is many animals that have similar body structures that humans do, also there was fossils found in far away places that are very similar

-Jason Goodridge-Guy 11/10/15