Question

Large reservoirs of water inside the earth

Answer 1

Water present on the Earth in 3 type (Solid, Liquid,and gas).All of these phases are present at some place in the Earth's major water reservoirs. The ocean is the largest water reservoir, with over 97% of the Earth's water.
The huge size of the reservoir throws new light on the origin of Earth's water.

Answer 2

Hello mate,

The answer is ground water.