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The variety of organisms that exist on Earth today can be directly attributed to A. steady climate over millions of years B. extinction C. speciation that occurs when empty nich…

The variety of organisms that exist on Earth today can be directly attributed to A. steady climate over millions of years B. extinction C. speciation that occurs when empty nich…
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The variety of organisms that exist on Earth today can be directly attributed to

A.
steady climate over millions of years
B.
extinction
C.
speciation that occurs when empty niches are filled
D.
Both A and B

User Dremet
by
8.1k points

1 Answer

3 votes

Answer:

the correct answer is D) both A&B

Step-by-step explanation:

User CyclingIsBetter
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