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Author Question: What percentage of a molecular cloud's mass is interstellar dust? A) 1 B) 2 C) 28 D) 50 E) ... (Read 95 times)

SAVANNAHHOOPER23

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on: Jul 27, 2018
What percentage of a molecular cloud's mass is interstellar dust?
 
  A) 1
  B) 2
  C) 28
  D) 50
  E) 1-50, depending on the mass of the molecular cloud

Question 2

Based on the frequency with which we see comets from Earth, astronomers estimate the total number of comets in the solar system to be
 
  A) 100 million.
  B) 1 billion.
  C) 10 billion.
  D) 100 billion.
  E) 1 trillion.


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leahchrapun

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

A

Answer to Question 2

E


SAVANNAHHOOPER23

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Reply 2 on: Jul 27, 2018
Wow, this really help

dreamfighter72

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Reply 3 on: Yesterday
Excellent

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