imagine going to get drink of water and discovering that the faucet is day or jumping into the shower to cool off on a steamy hot day and discovering that there's no water... Most of us simple take water for granted. we think there's plenty of it --- in oceans,lakes,rivers,and streams. But this is not case. the water we are using now is the very same water that the dinosaurs used millions of years ago. it is simply recycled over and over and again. there will never be any more water on Earth than there is now.