Which of the following statements are FALSE?: five major extinctions have been identified during the most severe mass extinction at the end of the Permian more than 96% of species perished the most recent major extinction was that of dinosaurs and a variety of other organisms 200 million years ago all of these
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Which of the following is true about the most recent of the "Big Five" mass extinctions? A) It occurred at the end of the Permian Era. B) It resulted in a loss of > 95% of all marine species alive at the time. C) It led to the domination of mammals. D) It caused the extinction of a large percentage of reptile species, including the dinosaurs. E) Both C & D.
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Which of the following is true about the End Permian and End Cretaceous mass extinctions? Both mass extinctions occurred before the Cambrian explosion. The proportion of species that went extinct were similar to background extinction rates in both cases. The cause of the End Cretaceous mass extinction has more conclusive scientific support. Both mass extinctions were caused by a meteor strike. More than one of these options is correct
Joanna Q.
Which of the following statements is true about the mass extinction that occurred at the end of the Cretaceous Period following an asteroid impact on the Yucatan Peninsula? a) this was the largest mass extinction in Earth's history b) disruption of ecological processes following the impact was not as significant as the immediate loss of species due to fires, earthquakes, and limited photosynthesis c) this extinction provided ecological opportunities for the diversification of mammals d) all of the above e) 60-80% of species extinctions occurred within 50,000 years of the impact
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