D. living things as a reservoir
Answer:
composed of a glycerol molecule binded to fatty acid molecules
Explanation:
The ozone layer keeps harmful rays from the sun also the atmosphere burns up small deburey from rockets, space trash ex. Also small rocks and particles can get burned before hitting the earth. One of the greatest things is it keeps spefic gasses needed for life like oxygen in the world.
100% should be the answer I believe
