Question

Although about two-thirds of the earths surface is covered byy water,very little of it can actually be used by us.justify

Answer 1

Although 2/3rd of Earth is covered by water only, very little of it can be utilised because-
1- It is in impure form
2- only 2% of water is fresh out of 2/3rd
3- 90% of fresh water is in the form of glaciers, or frozen form
4- most of the water percolates down as "ground water"
5- Also, water is universal solvent, it can get impure easily.

Answer 2

Answer:

Justify. Even though 71% of the total surface area of the Earth is covered with water (which is contained in lakes, rivers, ponds, oceans, seas etc) there is still a scarcity of water because oceans and seas alone account for 97.5 % of the total water found on the surface of Earth.