Multiple Choice
What hypothesis did Luis and Walter Alvarez test in relation to the mass extinction of dinosaurs 65 million years ago (MYA) ?
A) The mass extinction 65 MYA was caused by a surge of catastrophic cyclones.
B) The mass extinction 65 MYA was caused by a slow but steady increase in climate temperatures.
C) The mass extinction 65 MYA was caused by an impact of an extraterrestrial object.
D) The mass extinction 65 MYA was caused by the loss of preferred plants for food.
Correct Answer:

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Correct Answer:
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