PLS HELP ASAP I'LL MARK BRAINLIEST PLS PLS PLS

Answer is 140 because straight line =180

Z=40 ( because vertically opposite angles)

180-40

140

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.