OBJECTIVE LIFE SCIENCE
EVOLUTION
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Many scientists debate the rate at which species evolve. Which is NOT one of the ideas?
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Slowly and gradually
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Only through extinction events
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Quickly in bursts
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None of the above
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Explanation:
Detailed explanation-1: -Judging from the fossil record, the baseline extinction rate is about one species per every one million species per year.
Detailed explanation-2: -Ordovician-silurian Extinction: 440 million years ago. Devonian Extinction: 365 million years ago. Permian-triassic Extinction: 250 million years ago. Triassic-jurassic Extinction: 210 million years ago. Cretaceous-tertiary Extinction: 65 million Years Ago.
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