Where does most mechanical digestion take place in the digestive system?

Geothermic gradient is the rate of increasing temperature with respect to increasing the depth in the earths interior. away from tech tonic plates boundaries, it is about 25-40 c/km (72-87 degrees f/mi) of depth near the surface in most of the world.

Answer (a) the itcz comes overhead for part of the year; i believe this is correct,plz check first; ///