What questions could you ask a scientist about the location of water on earth?

Given below are a few questions that can be asked to a scientist about the location of water on earth:

What techniques can be used to trace the location of groundwater? Where on earth is the largest source of fresh/ drinkable water located? Can the glaciers located around the world be looked at as potential sources of usable water? Is it safe to extract and use the water located in the deep rock beds of the earth's crust? Does the salinity of seawater change with the location? Explanation:

A number of questions can be asked to a scientist regarding the location of water on earth.

These questions can be categorised as the ones related to the location of groundwater and the location of surface water. Ones related to the location of saline water and the location of fresh/drinkable water.

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