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B1.8 Evolution
Darwin's theory of evolution by natural selection states that all species of living things have evolved from simple
life forms that first developed more than three billion years ago
The theory of evolution by natural selection was only gradually accepted because:
The theory challenged the idea that God…

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Individual organisms within a particular species may show a wide range of variation because of differences in
their genes e.g. differences in height and weight (size).
Individuals with characteristics most suited to the environment are more likely to survive to breed
successfully, e.g. a successful competitive predator, a successful well…


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