The process by which individuals that are better adapted to the environment are more likely to survive and reproduce is called

Which of the following is the best example of an adaptation that helps an organism survive in its environment?

Which of the following is the weakest evidence supporting a close evolutionary relationship between two animals?

If cat's depend mainly on mice for food, and most of the mice are killed by disease, what would be the most likely effect on the cat species?

Scientists have discovered fossils of whalelike animals that had legs instead of flippers. This evidence most likely indicates that the ancestors of whales used to

Changes in a species over long periods of time are called

A trait that helps an organism survive and reproduce is called a(n)

Similar structures that related species have inherited from a common ancestor are called

The specific environment that provides an organism's needs is called the organism's

An organism whose cells lack nuclei is called a(n)

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