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Author Question: The dependence of all living cells on ____ to survive strongly suggests that simple, living ... (Read 142 times)

tingc95

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on: Aug 22, 2018

The dependence of all living cells on ____ to survive strongly suggests that simple, living molecules originated in the
  ocean.


 

a. fresh water
  b. saline water
  c. carbon dioxide
  d. oxygen
  e. methane



Question 2

Earths early atmosphere contained high concentrations of ____.
  a. oxygen and nitrogen
  b. carbon dioxide and oxygen
  c. oxygen and methane
  d. oxygen and ammonia
  e. carbon dioxide and nitrogen



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allisonblackmore

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Reply #1 on: Aug 22, 2018
Answer to Question 1

b

Answer to Question 2

e


tingc95

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Reply 2 on: Aug 22, 2018
Gracias!

juliaf

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Reply 3 on: Yesterday
Wow, this really help

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