What process is most responsible for the extinction of most species of plants and animals that have lived on Earth?

Which would indicate that a series of fossils represent the evolution of the horse?

A strawberry farmer finds that, after a hard freeze, some of his strawberries are 
still alive. Which best explains why these strawberries were able to survive?

Scientists think that dolphins and whales may have evolved from a common ancestor. What evidence supports this hypothesis?

In the winter, the fur of the arctic fox is white. In summer, the fur darkens to a reddish brown. What most likely causes the fur of the fox to change color?

Which would best allow a species to survive environmental changes?

What do transitional fossils best support?

Tigers and household cats are members of the same family; however, their sizes are vastly different. What is the cause of this difference?

Which best describes the similar function of wings in birds and butterflies?

Which most likely led to major changes in biological evolution?

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