i think the percentage is about 25%
people use to drink river water because in poor country many of them drink .If they don't they will die.But in American many people use to drink fresh water.
atleast 50%
They are rocks in the ground that filter water, and you use them by drinking from them!
They are rocks in the ground that filter water, and you use them by drinking from them!
ground water should be recharged because if the ground water gets used up then when we use the water from the ground there would not be more water to use
atleast 50%
people planting fruit trees in their back yard
They extracted it from rivers and ground wells and used canals to irrigate crops.
If it is used faster than it can be naturally replenished, then it becomes depleted.
I believe they were used for irrigation. definitely to pump water out of the ground whether for crops or not.
75%
They use their roots to reach ground water, and use that water for photosynthesis.