Tag: every drop counts

Potable water means drinking water. Well, river and lake contain drinking water as these all contain either rainwater and groundwater which is suitable for drinking. The sea which contains salty water that is not suitable for drinking is not a source of potable water.

The water cycle is driven by the sun.

The water in the oceans and seas has many salts dissolved in it. The most abundant ions in sea water are $Cl^-, Na^+. SO _4^{2-}, Mg^{2+}, K^+$.

True. Well water is an example of surface water because it appears on the surface and it is not ground water.

Option B is correct.