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Author Question: At the root of the tree of life A) is the common ancestor of all life on Earth B) is the common ... (Read 101 times)

audragclark

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At the root of the tree of life
 
  A) is the common ancestor of all life on Earth
  B) is the common ancestor of all mammals
  C) are viruses
  D) are human beings

Question 2

How many atoms fit across the period at the end of this sentence?
 
  A) hundreds
  B) thousands
  C) millions
  D) billions
  E) more than you could count in a lifetime



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adf223

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Answer to Question 1

A

Answer to Question 2

C




audragclark

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


JaynaD87

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Reply 3 on: Yesterday
Gracias!

 

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