Well if too much weathering occurs, it might break off parts of the cliff and be dangerous to humans, or animals.
Should be B, because one rotation is a day one revolution is a day(also to check I looked up the difference).
Answer:
The particles of the medium just vibrate in place.
Explanation:
As they vibrate, they pass the energy of the disturbance to the particles next to them, which pass the energy to the particles next to them, and so on. Particles of the medium don't actually travel along with the wave.
