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4 answers

Same thing we use it for to oxygenate the blood to live. They just get it in a different manner.

2007-01-11 10:09:43 · answer #1 · answered by Anonymous · 0 1

The same thing we all need it for. Burning energy. Oxygen + glucose = energy + CO2 + H20
Actually, I don't remember if that's the exact reaction.

2007-01-11 10:08:47 · answer #2 · answered by Anonymous · 1 0

Cell's need oxygen to survive and fish are made of cells.

2007-01-11 10:10:14 · answer #3 · answered by Anonymous · 0 1

FISH NEED OXYGEN TO BREATH LIKE HUMAN

2007-01-18 07:51:19 · answer #4 · answered by Walled S 1 · 0 1

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