Think about the most important thing for survival.
Think about the water aborbed by the ground .
Think about the usage of water in different sectors.
Think about what it gives
Think of the percentage of water that you find in rivers ,lakes etc. which are drinkable.
Think about the coverage on the map
Think of the fluid found in majority in the world
Think about the composition of water and also fishes in water from where do they breathe?
Think of the fluid you drink the most.
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