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einsteindude einsteindude
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10 years ago
At about what frequency is Earth struck by a meteorite large enough (about 10 km in diameter) to cause mass extinctions?
A) about every 1 million years
B) about every 10 million years
C) about every 100 million years
D) This has yet to occur on Earth
Textbook 
Conceptual Physical Science

Conceptual Physical Science


Edition: 6th
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bSharpbSharp
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