3 Obi sees a hawk dive into the grass and pick up a shrew. Later he sees a snail eating a plant, then sees a shrew with an empty snail shell.
a) Draw a food chain based on his observations.

a chair, a bed, and a toothbrush

explanation:

i was told this before by a teacher, so yeah

many other transport proteins, often called pumps, move materials against a concentration gradient. active transport drives molecules across a membrane from a region of lower concentration to a region of higher concentration. this process, shown in figure 5.1, uses transport proteins powered by chemi- cal energy.

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