I believe Isaac Newtons Law " Gravity ".
Answer:
wind
Explanation:
wind is the only one of those onto that list that is a renewable source
Answer:
Mechanical waves require a medium in order to transport their energy from one location to another.
Sound waves are incapable of traveling through a vacuum. Slinky waves, water waves, stadium waves, and jump rope waves are other examples of mechanical waves; each requires some medium in order to exist.