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Author Question: If a major asteroid collision in the asteroid belt occurs, on average, 1 time in 100,000 years, then ... (Read 108 times)

PhilipSeeMore

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on: Jul 27, 2018
If a major asteroid collision in the asteroid belt occurs, on average, 1 time in 100,000 years, then how many major collisions have occurred over the approximately 4 billion year history of the solar system?
 
  A) about 4,000 B) about 4 billion C) about 40,000 D) about 4 million

Question 2

The lunar mare are found
 
  A) uniformly all over the Moon.
  B) only in the dark areas of the lunar poles, where water is not boiled away.
  C) mainly on the near side.
  D) mainly on the far side.
  E) only as layered rocks, since the original water was lost long ago.


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janeli1

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Reply #1 on: Jul 27, 2018
Answer to Question 1

C

Answer to Question 2

C


PhilipSeeMore

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Reply 2 on: Jul 27, 2018
Excellent

xiaomengxian

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Reply 3 on: Yesterday
Gracias!

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