Question

Why is all water available on earth not usable? And how it can be renewed

Answer 1

All the water in the earth is not usable since a lot of it is sea water, which is NOT fit for human consumption.

water can not be renewed since it is an exhaustible source of energy.

Answer 2

Explanation:

1.All water on earth are not useful for drinking and other activities like washing clothes etc

So,they are kept out in a sunny day,it becomes powderly which is called salt

EXAMPLES -SEA WATER

2.3/4 % OF EARTH'S SURFACE IS WATER

3.WE CAN'T USE THIS SEA WATER

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