How can animals have difficulty getting energy? a. there is little sunlight b. there is a large supply of food c. there is a limited supply of food d. they cannot reproduce (i’m going between a and c but i’m not sure)

it depends on how much it could carry.

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