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What is true of mass extinctions?

A All life on Earth dies when a mass extinction happens
B In each mass extinction, over 50% of animal species died.
C Mass extinctions happen frequently.
D There is no evidence for past mass extinctions.

User Iamkeir
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3.7k points

2 Answers

3 votes

Answer:

b

Step-by-step explanation:

mostly 99% of all species die

User Vitalii Mytenko
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4.5k points
3 votes

Answer: I think the answer is B

Step-by-step explanation:

User Mirko Arcese
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