Ocean waves are a type of wave known as: A. hammer wave B. salt wave C. mechanical wave D. instrumental wave

a mechanical wave

Explanation:

i did the research and a mechanical wave is a wave that  is an oscillation of matter, and therefore transfers energy through a medium. While waves can move over long distances, the movement of the medium of transmission—the material—is limited. Therefore, the oscillating material does not move far from its initial equilibrium position. (do not copy this it is from internet and you will most likely get a not good grade for copying)

what events in mexico's history might explain why the country continues to have difficulty improving social justice and economic opportunities for all people?