The center of rotation is illustrated by
a. 90 degrees
b. point x
c. the arc formed by the verticles

The correct answer option is B. Point X.

Step-by-step explanation:

We are given a graph where two triangles, a fixed point X and an arc is shown and we are to determine the center of rotation in it.

Center of rotation is basically a fixed point on a plane or a graph about which and figure rotates. It acts like a pivot in a door.

So here. we can see that point X is the center of rotation about which the vertex of a triangle is rotated 90° counterclockwise, forming an arc.

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.  

10.416 meters per second

step-by-step explanation:

distance=1 00 meters

time= 9.6 seconds in decimal form or 9 3/5 as a mixed number

average speed= 100/9.6

=10.416 meters per second or 10 52/125 as a mixed number.