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Author Question: Which of the following are possible causes for mass extinctions on Earth? A) episodes of ... (Read 69 times)

mydiamond

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on: Jul 27, 2018
Which of the following are possible causes for mass extinctions on Earth?
 
  A) episodes of widespread volcanism
  B) impacts of asteroids
  C) snowball Earth episodes
  D) all of these can be responsible for mass extinctions

Question 2

When a liquid freezes
 
  A) the temperature of the substance increases.
  B) the temperature of the substance decreases.
  C) heat energy leaves the substance.
  D) heat energy enters the substance.


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lgoldst9

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

D

Answer to Question 2

C


mydiamond

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Reply 2 on: Jul 27, 2018
Thanks for the timely response, appreciate it

amandalm

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Reply 3 on: Yesterday
Wow, this really help

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