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evolution is change over time

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    populations evolve in 5 simple steps through Darwin's proposed process of Natural Selection

1. OVERPOPULATION there are too many organisms
2. VARIATION all individuals vary in traits
3. COMPETITION if there are limited resources individuals will fight for them
4. SURVIVAL OF THE FITTEST only those best suited for the environment will survive
5. HEREDITY those that survive will reproduce and pass their genes/traits on to the next generation
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Darwin  
Natural Selection