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Author Question: Approximately how long ago did the dinosaurs suddenly become extinct? A) 6 million years ago B) ... (Read 28 times)

genevieve1028

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on: Jul 27, 2018
Approximately how long ago did the dinosaurs suddenly become extinct?
 
  A) 6 million years ago
  B) 65 million years ago
  C) 245 million years ago
  D) 10,000 years ago

Question 2

The case of Venus tells us that which of the following is a critical factor in determining surface habitability?
 
  A) planetary size
  B) levels of geological activity
  C) distance from the Sun
  D) the presence of a magnetic field


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heinisk01

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

B

Answer to Question 2

C


genevieve1028

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Reply 2 on: Jul 27, 2018
Great answer, keep it coming :)

patma1981

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Reply 3 on: Yesterday
Excellent

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