Which of the following best describes a negative linear association?
A. Variables have no relation to each other when plotted.
B. As one variable increases, so does the other.
C. A data set that includes both negative and positive numbers.
D. As one variable decreases, the other increases.

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.  

where is the graph? need more info

answer: they are supplementary angles

step-by-step explanation: 161+19=180. supplementary angles equal 180 degrees