Answer :

To determine how many species go extinct in an average day, we need to consider the options provided in the question:

a. 3
b. 72
c. 1000
d. 20000

Based on ecological studies and widely accepted estimates, the number of species that go extinct each day is typically around 72. This figure is derived from extensive research on biodiversity loss and is used by many environmental organizations and scientists to raise awareness about the rapid rate of species extinction currently impacting the planet.

Therefore, the answer is:

b. 72

This is the generally accepted estimate for the number of species that go extinct daily due to factors like habitat destruction, climate change, pollution, and other human activities.

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