Evolution is the change over time. As the environment changes, animals must adjust in order to survive. For example, peppered moths mushy adapt based on the trees that there are in the forest. In a light forest, lighter moths survive because they can be more easily blended in. The same is true for a dark forest but with dark moths. If the moths migrate to a forest with the opposite of their color, they will need to adjust to thier new environment and slowly edit their traits over a span of time.
Humans are altering the environment by removing forests to build buildings, and they also contribute to global warming. This impacts the environments that different animals live in, causing them to need to change for their new environment. If they cannot adapt over time, their species will die out and become extinct
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