Dr. Bhatti specializes in the study of hormones and neurotransmitters. His research would show that:.

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

cuz some people don't have enough food. that's why we need more ppl to donate food to the hungry.

answer; ///progressive relaxation;