C is what i think is correct.
Due to divergent evolution, some species may have similar anatomical structures with the same purposes. The species while not exactly similar are close enough to allow the interbreeding of the two, such as the horse and mule
They are both the building blocks of life
The S wave penetrate the interior of he earth
shake the ground perpendicular to the direction in which they are propageting.
It does not travel through liquids.
1.7 times slower than P waves
