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Author Question: The center of mass of the solar system is A) midway between the Sun and Jupiter B) exactly at ... (Read 73 times)

vHAUNG6011

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on: Jul 27, 2018
The center of mass of the solar system is
 
  A) midway between the Sun and Jupiter
  B) exactly at the center of the Sun
  C) just outside the orbit of Mercury
  D) close to but not exactly at the center of the Sun

Question 2

What do we mean by The Oxygen Crisis in relation to the evolution of life on Earth?
 
  A) the extinction of older anaerobic life as oxygen builds up in the atmosphere
  B) the time period before the development of the ozone layer
  C) a period when evolution accelerated so rapidly that there was insufficient oxygen available
  D) the destruction of oxygen in the early atmosphere


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johnpizzaz

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

D

Answer to Question 2

A


vHAUNG6011

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Reply 2 on: Jul 27, 2018
Wow, this really help

mochi09

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Reply 3 on: Yesterday
Thanks for the timely response, appreciate it

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