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16 April, 10:24

What does the background extinction rate tell us?

the number of organisms that would go extinct if humans were not here

They are cause for concern; they are many times greater than before.

the overall number of organisms that go extinct, whether or not it is due to human activity

none of the above

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  1. 16 April, 11:30
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    Background extinction rate, also known as the normal extinction rate, refers to the standard rate of extinction in earth's geological and biological history before humans became a primary contributor to extinctions.
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