Question

why the water is called as the primary source of water ​

Answer 1

Answer:

Out of all the sources of water, rainwater is the primary source of water. ... Surface water is replenished by rain and lost through flowing in the oceans, evaporation, transpiration and groundwater seepage. > Groundwater is freshwater located in the pore space of soil and rocks in the ground.

Answer 2

Answer:

Rainwater is the primary source of drinking water after filteration. This is because among the total percentage of water most of them are salt water in oceans, thus cannot be used. The rest fresh water is found in glaciers but needed to be melted. Therefore rainwater is the primary source.