Natural selection which is also called survival of the fittest is when a species has an adaptation that makes it better able to survive, reproduce, and pass on it’s genes. When it says survival of the fittest, it doesn’t mean that only the strong survive. It means that those species with the best adaptations are the ones that are best able to pass on their genes. Natural selection happens in the environment because those with the best adaptations to survive in the environment are the ones who are able to pass on their genes so more animals like them are born.
The first theory of evolution is biogeography. Biogeography is the geographical distribution of species. Biogeography shows examples of evolution because there is scientific evidence that there used to be one big continent called PANGEA. Then all the plates began to move so there are seven continents. But what scientists have found is that where PANGEA used to fit together, the fossils are similar. This proves it because even though the species aren’t alike now, at one point they were and then as the continents drifted, the species were forced to adapt and change to survive in their habitat. Also another example of biogeography is islands that are c
The organism I am going to use to show the process of evolution is the wolf. The wolf I’m choosing lives in the Alaskan tundra. It faces harshly cold winters and moderate summers. It never gets too warm where the wolf lives. The environment the wolves live in is really harsh. Many animals can’t survive there but there are some adaptations the wolves have that make them able to survive so well. These adaptations are its fur, teeth, and the power of hunting in a pack with an alpha wolf as a leader. If the wolf didn’t hunt in a pack, they would never be able to make it because they wouldn’t be able to hunt down their prey. Also it’s really important that there’s a leader so that the wolves know what to do. A change that might occur in the environment is that it could be really warm consecutively. Alaska could warm up meaning a change in temperature. This would really cause some problems for the wolf that the wolf would have to adapt to. The wolf for one thing would have to shed its thick coat. The fur wouldn’t need to be as thick if the winters weren’t nearly as cold. Also the summer coat might even be lighter if it’s a lot warmer. Also the wolf might need to make changes in its food. The wolf hunts down its prey such as deer and elk. The deer and elk might make some changes in where they live because it could be too hot for them. In the summer the elk migrates and maybe the warmer weather might make the elk migrate to a new place. This might mean that for the wolf to get food, it will have to also change environments.
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