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Author Question: The oldest rocks on our crust are radioactively dated at about: A) 200 million years old. B) one ... (Read 87 times)

809779

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on: Jul 27, 2018
The oldest rocks on our crust are radioactively dated at about:
 
  A) 200 million years old.
  B) one billion years old.
  C) 2.7 billion years old.
  D) four billion years old.
  E) 4.6 billion years old.

Question 2

When the Moon is directly opposite the Sun in the sky, its phase is:
 
  A) new.
  B) waxing or waning crescent.
  C) first or third quarter.
  D) waxing or waning gibbous.
  E) full.


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amandanbreshears

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

D

Answer to Question 2

E


809779

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Reply #2 on: Jul 27, 2018
Both answers were spot on, thank you once again


amandanbreshears

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Reply #3 on: Jul 27, 2018
Great! Please up vote :D


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