ADV 7th Benchmark review 2-c

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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

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

Changes in a species over long periods of time are called

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

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

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

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

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?