10x^2+9=499
Show me step by step please?

= 7

Step-by-step explanation:

10² + 9 = 499

10² = 499 - 9

10² = 490

² = 49

= 7

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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.  

a

step-by-step explanation:

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