Select the correct answer from each drop-down menu. A system of equations and its solution are given below.
System A
- y = 7
-3x + 9y = -39
Solution: (4,-3)
Complete the sentences to explain what steps were followed to obtain the system of equations below.
System B
x - y = 7
To get system B, the first equation in system A was replaced by the sum of that equation and
equation. The solution to system B the same as the solution to system A.

answer: are you

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.  

answer: h

step-by-step explanation: