What factor defines all groups in the köppen system, with the exception of dry climates?
air pressure
temperature
precipitation
evaporation

c is the answer to this question. altitude affects the weather because air molecules evaporate.

your answer is going to be physical weathering

all these collisions do one thing, and that thing is explained in the last option. when dusst, rocks and ice collide, they harden and form giant layers of rocks or hard ice.

d)   to harden materials to form different parts of earth’s layers

hope it ,

bioteacher101