Question

Two thirds of the earth surface is covered with waterrace. Then why should we conserve water?

Answer 1

two third of the earth surface is covered with water but only few of it is available for drinking and in pure form. most of the two third water is salty and in ice sheets and therefore we are remained with only few amount of water to satisfy the needs of such a large population ....therefore we need to save water

Answer 2

because it is alkaline.