Why is water necessary for living organisms?
all organisms need water to stay clean.

all organisms need water as an energy source.

all organisms need water to transport chemicals into their cells.

all organisms live in the water.

The answer is: All organisms need water to transport chemicals into their cells.

For example, supplies the body with oxygen and nutrients, and picks up carbon dioxide wastes.

The blood transports:

1) oxygen from the lungs to the cells of the body.

2) carbon(IV) oxide from metabolism to the lungs, where it is exhaled.  

3) nutrients, transports hormones and removes waste products.

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