Question

Almost two third of the earth surface os covered with water but still we need water to conserve it why

Answer 1

Though two thirds of the earth is covered with water we need to conserve water because the among 100 % of the water available only 0.03% of the water is usable that is we can use it for various purposes and the other part constitutes the unusable saltish water unfit for human use so it is extremely necessary that we conserve water

Answer 2

your questions is hoti mark but we should know that not the 100%of water is for is useful for our consumption there is only 1% fresh water from that 100% water so we have to conserve water.