Make a guess about what percentage of the human body is made up of water. Also, write down what you already know about the ways water keeps us alive.

Importance of water: Human body is composed of about 75% water.

1) Water allows our blood to flow through the blood vessels thus supplying the body with vital nutrients. Water also allows waste matter to be eliminated from the body through the excretory system.

2)Water is used for drinking, washing, cleaning, etc.

3) Water acts an important agent in soil formation.

4) Water provides habitat to many organisms on earth.