Biology B2 - Natural selection
- Created by: Alex Kermode
- Created on: 28-04-13 16:23
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Darwin's theory of evolution explains how species of living things have changed over geological time. Scientists believe this is the reason why all living things on Earth exist today. Many species have become extinct in the past and the extinction of species continues to happen.
Darwin’s theory
Key points of evolution by natural selection:
- individuals in a species show a wide range of variation
- this variation is because of differences in their genes
- …
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