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Author Question: What is the first stage of planetary development? a. cratering b. flooding c. bombardment d. ... (Read 55 times)

anjilletteb

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on: Jul 27, 2018
What is the first stage of planetary development?
 
  a. cratering
 b. flooding
 c. bombardment
 d. differentiation
 e. slow surface evolution

Question 2

______________ are cool, with temperatures of about 100 K and densities of ten to a few hundreds of atoms per cubic centimeter.
 
  Fill in the blank(s) with correct word


livaneabi

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

d

Answer to Question 2

H I clouds


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