Biology, 23.06.2021 18:20 sierravick123owr441
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
Answers: 3
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The large increase in atmospheric carbon dioxide in the last 50 years most likely comes from a. an increase in cellular respiration b. increased decomposition by bacteria c. an increase in the burning of fossil fuels d. an increase in photosynthesis
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Which of the following cell structures is significantly different between gram- positive and gram-negative bacteria?
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The mass extinctions that occurred 250 million years ago and 65 million years ago may have been due...
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