A hypothetical strain of bacteria doubles every 5 minutes. One single bacterium was put in a sealed bottle at 9:00AM, and the bottle was filled at exactly Midnight. AT what time was the bottle half full?

the answer would be d : p

d. planting trees

the trees take in carbon to make oxygen.

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