How big was the meteorite that apparently caused the Cretaceous-Tertiary mass extinction?
A) 1 km
B) 10 km
C) 100 km
D) 1000 km
Correct Answer:
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Q7: What is an aerial burst?
A)an explosion in
Q8: The shock wave resulting from meteorite impact
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A)a small comet
B)a large meteoroid
C)a
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