Differences in traits

Change in the genes of a population over time

Process where organisms with helpful traits survive and pass on those traits to their offspring

Random change in genes

A trait that helps an organism survive

Youngest layers of rock are on top, oldest on bottom

remains of once living things

having the same bones in different organisms

Characteristic

Group of similar organisms that can mate and have offspring that can have babies

Naturalist that came up with Theory of Evolution by Natural Selection

Theory

Struggle for food, space, water, mate....

No longer existing on earth

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