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MA_775_DIABLO [31]
3 years ago
11

The mass extinctions that occurred 250 million years ago and 65 million years ago may have been due to gradual processes or ____

_.
A.)a large comet or asteroid striking Earth

B.)widespread reproductive isolation

C.)lightning strikes

D.)rapid continental drift
Biology
1 answer:
MatroZZZ [7]3 years ago
3 0
A:a large comet or asteroid striking earth
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