This is a characteristic that helps an organism survive and reproduce in its environment.

This word literally means change over time.

This term means that the strong survive, while the weak die.

This term means that a person chooses which animals/plants to breed to enhance a certain trait.

This term means that a trait is passed from the parent to the offspring.

An unused body part is called

Scientists sometimes study and compare unborn babies, called

This person founded the theory of evolution by natural selection.

Darwin noticed that the beak shape of the finch had changed depending on

Humans have an opposable thumb. Because this structure has helped humans over time, it is considered

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