1.Simplify the following Expression
a. 3y2 + 8y - 12 + 6x – 4y + 2y2

5y2 + 4y - 12 + 6x

Step-by-step explanation:

3y2 + 2y2 + 8y - 12 + 6x

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.  

its 50 miles away from the starting point