Water does not contain carbohydrates, fats, or proteins which are essential components of food. Then why do we drink water?

Water is a universal solvent, and is used in biochemical reactions that take place in the human body.

when you breathe in, or inhale, your diaphragm contracts (tightens) and moves downward. this increases the space in your chest cavity, into which your lungs expand. the intercostal muscles between your ribs also enlarge the chest cavity. they contract to pull your rib cage both upward and outward when you inhale.

1. b.

2. d.

3. a.

5. d.

6. c.

these are the only ones that i know, i hope this , and good luck.