Answer:
1. The body uses fat as a fuel source, and fat is the major storage form of energy in the body.
2. helping to strengthen certain structures or bringing oxygen to the body's cells.
3. Your body uses water in all its cells, organs, and tissues to help regulate temperature and maintain other bodily functions.
All microscopes have lenses. Some types of lenses are eyepiece lenses, objective lenses, and condenser lenses.
I would guess C, hope that helps!