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studyperfect studyperfect
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6 years ago
The most severe mass extinction occurred at the end of the Permian Period.
 
  Indicate whether the statement is true or false.

Question 2

Most likely, about 10 percent of all species go extinct every million years.
 
  Indicate whether the statement is true or false.
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Jango4445Jango4445
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6 years ago
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studyperfect Author
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6 years ago
this is exactly what I needed
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Yesterday
Smart ... Thanks!
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2 hours ago
Helped a lot
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