NEET BIOLOGY

Detailed explanation-1: -Water that has been stored in aquifers for thousands of years is called fossil water. Fossil water is often considered a non-renewable resource, because it cannot be replenished by precipitation.

Detailed explanation-2: -Fossil water or paleowater is an ancient body of water that has been contained in some undisturbed space, typically groundwater in an aquifer, for millennia. Other types of fossil water can include subglacial lakes, such as Antarctica’s Lake Vostok, and even ancient water on other planets.

Detailed explanation-3: -(a) Aquifer is groundwater stored between layers of hard rock above the water table.

Detailed explanation-4: -There are 6 quintillion gallons of water hiding in the Earth’s crust-Los Angeles Times.

Detailed explanation-5: -Fossil water appears all over the globe in humid, semi-arid, and arid regions as well as areas of permafrost. Regardless of the current climate of these places, sometime before the Holocene epoch (the geologic age in which we now live), the planet was much wetter.