Order of operations 4
use the correct order of operations to evaluate each expression.

choices
-4
-6
1
4
20
21

1. 21

2. -4

3. 20

4. 1

5. 4

6. -6

Step-by-step explanation:

the answer is; biodiversity resulting from few ancestors

adaptive radiation occurs when a population is subjected to a large natural environment with spatial ecological variations. the parts of the population in the different ecologies begin to adapt to their local environments. due to non-random mating across the large populations, this causes the different populations from the large population to speciate within their local environments. they, therefore, diverge to different species sharing a common ancestor.