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Question

Which of the following are the major reasons behind mass extinctions that happened on earth?



A
Asteroid strikes and human migration
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B
Volcanic eruptions and human migration
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C
Asteroid strikes and volcanic eruptions
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D
Tsunami and asteroid strikes
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Solution

The correct option is C Asteroid strikes and volcanic eruptions

  According to scientists, asteroid impact and volcanic eruption are the two major reasons behind mass extinction events. 
 
Migration refers to humans moving to far away areas in search of food and exploiting the environment which caused extinctions. Although these occured often, they were never as severe to be considered a mass extinction event.
  Tsunami is a long, high sea wave caused by an earthquake or other disturbance. It is a natural phenomena similar to asteroid strikes or volcanic eruption but it's not as severe as they are.


Biology

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