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Author Question: When did life first appear on Earth? a. 14 billion years ago b. 400 million years ago c. 4.6 ... (Read 138 times)

Metfan725

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on: Jul 27, 2018
When did life first appear on Earth?
 
  a. 14 billion years ago
 b. 400 million years ago
  c. 4.6 billion years ago
 d. 65 million years ago
 e. 3.4 billion years ago

Question 2

The Big Bang is a theory describing the ____.
 
  a. birth of our Solar System
 b. start of civilization on Earth
 c. beginning of planet formation
  d. beginning of the Universe
 e. massive extinction of dinosaurs


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lcapri7

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

e

Answer to Question 2

d


Metfan725

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Reply #2 on: Jul 27, 2018
TY


lcapri7

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Reply #3 on: Jul 27, 2018
You're welcome


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