What Is a Likely Reason the Cretaceous Extinction About 65

question 23

Multiple Choice

What is a likely reason the Cretaceous extinction about 65 mya is the best studied mass extinction?

• A) It is the most recent mass extinction. Therefore, the fossils are typically closer to the surface and more easily reached for study.
• B) It was by far the most far-reaching extinction and most interesting extinction event because it killed everything in the oceans.
• C) It was the mass extinction farthest back in time, and it gave rise to the Cambrian explosion.
• D) It was the mass extinction event that killed off all of the animals and plants that arose during the Cambrian explosion.

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