Think of the fluid you drink the most.
Think about the usage of water in different sectors.
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 about what it gives
Think about the most important thing for survival.
Think of the percentage of water that you find in rivers ,lakes etc. which are drinkable.
Think about the coverage on the map
Think about the water aborbed by the ground .
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