Use the parabola tool to graph the quadratic function f(x)=−x^2+4. Graph the parabola by first plotting its vertex and then plotting a second point on the parabola.

answer: a.

step-by-step explanation: the answer is a. because, you need to converge the fractions to find a solution.

answer: 42

use a calculator to find that 845/73 = 11.575

the whole part of the answer is 11. multiply this by 73 to get 11*73 = 803.

subtract that result from 845 to get 845 - 803 = 42

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.