UPSC CAPF Assistant Commandant Model Paper 6

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Question : 124 of 124
 
Marks: +1, -0
Consider the following statements about "Mass Extinction"
1. Mass extinction refers to when the Earth loses more than three-quarters of its species in a geologically short period of time.
2. So far, during the entire history of the Earth, there have been four mass extinctions, and we are experiencing the sixth mass extinction.
Which of the above statements is/are incorrect ?
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