Why is majority of fres water not available to us for use ?

How is water distributed on the globe ? How much of fresh water is available to us ?

Majority of plants use

Only_______percent of water is available to be used as fresh water:

Why is hard water not used in boilers ?

Seas and oceans are full of water on earth. However, a very small percentage of water present on earth is available for us. This percentage is roughly