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maksim [4K]
3 years ago
13

One natural cause of extinction would be the massive __________ that occurred in the 1800s.

Biology
2 answers:
Aleks [24]3 years ago
6 0
Earth's history. In the worst one, 250 million years ago, 96 percent of marine species and 70 percent of land species died off. It took millions of years to recover.

NemiM [27]3 years ago
6 0

Answer: volcano

Explanation:

usatestprep multiple choice answer

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In this lab, you used a dichotomous key to identify organisms. Why would this skill be valuable to you? Check all possible reaso
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