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Giraffes

The ancestors of giraffes are animals that look like deers and antílopes, and normally they used to have short necks, and it start as a mutation when a giraffe had slightly long neck, these giraffes had a advantage because the tree were tall so they were able to reach for food. Eventually they survive more making the long neck the dominant gene for the new generations.

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When there is a constant use of pesticide on a specific crop, eventually insects would develop a resistance to the pesticide. Pesticide resistance is not only very common but it happens really fast, it only takes a single generation to create the mutation. For example, a group of insects that survive the pesticides is the one able to reproduce and those who are not immune would die. As a result the offsprings would be resistant to the pesticide since birth. The green peach aphid, is resistant to more insecticides than any other insect.

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Penguins are a type of birds, but they can't fly, so they have adapted to being swimmers, which it benefits them to finding food and escaping from the predators.  But in Antarctica, and other places the penguins live that is cold, there are no natural predators on the land, so they been losing the ability to fly but is not a disadvantage.

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The leopard seal evolved, like most carnivores, from a ground animal to a sea animal, adapting through the years turning their paws into fins, that´s why you can see claws sticking from their swimming adaptations.
Another proof of these adaptions are their teeth. If you look closer, Leopard seals, like most carnivores, have a set of canines to break through bones and meat. They also have fur to protect themselves from the cold, and pretty black spots all over them. These animals are also known for their speed, and size. It´s probably the biggest of the seal family and one of the deadliest hunters of the sea.

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Various studies have been done on Lizards to determine natural selection. In one experiment, natural predators of lizards were eliminated of a particular area, then scientists observed the impact on lizards. The results showed that the predators of lizards diden't influence that much on the death or survival of certain lizards. The smaller lizards were more likely to die despite the lack of predators, because the lizards with the larger and stronger legs were able to climb efficently to escape the ground when floods or storms came, and reach food that wasnt able at the ground.

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By: Laura Molina
The Cave-Dwelling Fish lost its eyes to evolution by natural selection. A type of this specie is a the Mexican blind cavefish. These fishes live in a dark environment of little food and oxygen, making it hard to survive. In order to survive, they had to save their energy, to concentrate on their search for food, and the way it could be done was by being sightless, based on a study that the Sweden's Lund University made. This study was made by measuring the consumption of energy in their eyes and their brain, getting to conclude, that blind fishes can reduce their energy consumption in a 15%.

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Peacocks
They reproduce and evolved by sexual selection that its a type of a natural selection that occurs on this type of animal and some kind of birds.
These sexual selection it consists on how the femeles have the power and the decitions on how and with who do they want to reproduce with, they pick their partner depending on their physical apperence. The female pick the male depending on the brightness of their plumage because they think that this means that they can have high-quality genes, so the offspring is going to have better genetic information. So when females strart only picking the males with larger and brightness they started to reduce the posibilities to evolved, an as a consequence the species also reduce and thats why the peacocks are so rare nowadays.

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Snap trap plant that evolved from another carnivorous plant Drosera, which uses a sticky trap to catch prey. This plant consumes large terrestrial bugs, which is why it evolved to snap rather than use the sticky trap. For instance, Drosera uses sticky trap because it catches small bugs and spiders. It is interesting that carnivorous plants evolved as a result of adaptation to the environment. The soil where they grow lacks nitrogen, which is vital for plant survival. The insects they prey on provide the nitrogen plants need

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Keim, B. (31 Dec. 2008). “12 Elegant Examples of Evolution.” Wired. (n.p). www.wired.com/2008/12/evolutionexampl/.

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Before bones started spreading around bodies and helping in the formation of human structure, they were called Neural crest cells. These cells originated in the spinal cord and their main definition is that they are a temporary group of cells that due to a step on embryotic growth it's how cell lineage can be tracked.
When studies started being applied to embryos and fossil records, due to technology, researchers' investigations facilitate because, with the new instruments, they could be able to track cells during the development of the embryo that ends up in the frontal attachment of the head to the body springs.
An example of this lineage is of a bone found in fish that lives on humans as the shoulder blade. These bones connect the upper arm bone with the clavicle.

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Guppies are a very naturally selected, because of the way the they adapt to the environment. Depending on the environment they grow bigger in size, and have more kids. They have sexual fertility once 6 weeks have passes from birth. "the guppy population is responding according by maturing earlier or later, producing variable sized fry and so on" This sentence shows how they adapt to different circumstances.

Bibliography: https://answersingenesis.org/aquatic-animals/fish/natural-selection-in-guppies/

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This example provides evidence that show how a specie evolves to adapt to its environment. Charles Darwin studied these birds around 1861. He saw that different types of finches Galapagos Ilands, Ecuador had different sized beaks. In these Equatorian islands, finches have different diets. Those that search for seeds have large beaks in order to have a greater scope and those that eat nuts, have short and strong beaks to break them.

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Darwin’s finches are an excellent example of the way in which species’ gene pools have adapted in order for long term survival via their offspring.
Their beaks have evolved over time to be best suited to their function. For example, the finches who eat grubs have a thin extended beak to poke into holes in the ground and extract the grubs. Finches who eat buds and fruit would be less successful at doing this, while their claw-like beaks can grind down their food and thus give them a selective advantage in circumstances where buds are the only real food source for finches.

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Warrior ants are a type of ant that has evolved over time to become more skilled at battling, which is an example of natural selection at work. Certain ants grew longer mandibles as the species progressed, allowing them to better protect their colonies from predators and other ants. Because these long mandibled ants were more effective at survival and reproduction, their features grew more frequent in the community through time, they use a toxin to attack other colonies, this is for they to camouflage in other colonies

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For instance, we can see natural selection in bacterias in antibiotic resistance. There is a common misuse/overuse of antibiotics and when this happens the bacteria becomes resistant to these type of treatments. This can be dangerous for humans because the treatments used in order to cure fatal diseases are now useless.

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There are many types of snakes from many types of places. And they are part of the investigations of natural selection because they used to have legs long time ago, but during time they started to evolve because of their changing environment. Does legs exist but are not visible and they don't work anymore.

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Giraffes, for instance, have a competitive advantage because of their long necks, which have evolved to allow them to eat on leaves that other animals cannot reach. Because they had access to greater food, individuals with longer necks were able to breed and pass on the trait to the next generation.

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Fire salamanders have evolved by natural selection during time due the poison their skin have, meaning any animal who bites or eats them will die, helping this species to survive to their most common predator, the snakes.

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The peppered moth, which evolved from a light colored to a dark colored species during the English industrial revolution is an example of animal evolution through natural selection. This was owing to the soot emitted by industries which altered the habitat of the moths making dark-colored insects more conspicuous to predators and light colored moths  Easier to camouflage

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The bacterium Pseudomonas is able to metabolize nylon thanks to certain enzymes it has.  However, an interesting aspect happens when a non-nylon eating variety of this bacterium is taken and placed in an environment where the only type of food available is nylon. The experiment has been tried multiple times, and the result is that the bacteria evolved until it was able to consume nylon. This is an example of natural selection, as the most basic forms of life (such as bacterias) can adapt to the food that the environment offers.

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Deer Mouse
The deer mouse, species Peromyscus maniculatus gives an example of evolution by natural selection. This mouse is typically dark brown which is a good color for mice living in the woods and surrounding areas since it allows them to hide better and avoid predators. But in places where glaciers dropped lighter sand over the darker soil, the mice are light. For example, in the Sand Hills, they have evolved into a much lighter, sand-like color. Without this change, the deer mouse would be easily spotted by predators against the area's light terrain.