because it is QUITE
Animals and humans eat food to stay alive. Metabolic processes break down the food (plants and animals) to obtain energy, and the materials needed to build and repair the body.
Animals need food to stay alive because food gives them nutrients and energy. Nutrients and energy are both important because they help the bodies of animals function.
Animals stay alive in hibernation as this is a natural process.
because the ocean sponge gets bigger by absobing the sea water to stay alive
well oceans don't really need animals but where would the animals live or stay at they can not stay in one ocean
Water and nutrients
instinct
some animals digg down all the way the deep of the ocean and there are lots of warmth there
keep it in the deep ocean....that's the only way it will stay alive otherwise it will die without water.
Oxygen.
Its instinctual, animals naturally would like to stay alive.