I will pick you brainlist Look at the triangle below.

Which of the following statements is not true?

a+b=y
A plus b is equal to y

180−(a+b)=y
180 minus open paren A plus b close paren is equal to y

x+y=180
x plus y is equal to 180

180−x=a+b

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: the resulting cross section is a rectangle. solution: a plane parallel to the base of a triangular prism will intersect a cross section that is the same shape as its bases. so the cross section is a triangle.

step-by-step explanation: