Defense Mechanisms In a few sentences tell me a little bit about each one of the defense mechanisms.
Give me an example or each one of the mechanisms.

Rain is pulled by gravity which is a non contact force

Ibelieve that the correct answer is: c. along plate boundaries

Answer(a)   the matererials that are in contact, the two materials and the nature of their surfaces/// (b)/// the force pushing the two surfaces together, pushing the surfaces together causes the more of the asperities to come together and increases the surface area in contact with each other