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Author Question: There have been at least how many mass extinctions over the course of 570 million years? a. 15 ... (Read 72 times)

tiara099

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on: Jul 10, 2018
There have been at least how many mass extinctions over the course of 570 million years?
 
  a. 15
  b. 2
  c. 7
  d. 20
  e. 12

Question 2

According to biologist Stephen Palumbi (2001), humans are the world's
 
  a. greatest creation.
  b. weakest evolutionary force.
  c. greatest evolutionary force.
  d. greatest devolutionary force.
  e. greatest threat.


bdobbins

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Reply #1 on: Jul 10, 2018
Answer to Question 1

a

Answer to Question 2

c


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tiara099

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Reply #2 on: Jul 10, 2018
Correct answers!


bdobbins

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Reply #3 on: Jul 10, 2018
Great! Please up vote :D


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