Evolution

BiologyIntermediate Level

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Question

What is natural selection and how does it drive evolution?

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Answer

Definition

Natural selection is a process where organisms better adapted to their environment tend to survive and reproduce more than others. This leads to changes in the traits of a population over generations.

Example

The peppered moth changed color during the Industrial Revolution in England; darker moths survived better in polluted areas, leading to more dark moths in the population.

Quick Tip

Survival of the fittest!

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