(a) freshwater
(b) recharge
(c) aquifer
(d) snow.

The water found deep below the earth between particles of soil and the gaps between the rocks is called underground water. It gets filtered through many layers of sand, rock and soil. It contains dissolved salts but is free from suspended impurities. It can be obtained from wells, tube wells and hand pumps.

Water is very important to sustain life on earth. Metabolic functions of living beings can not be performed without water. Besides it provides habitat to several animals and plants.

Collecting and conserving the rainwater from the roof tops of the building is called rainwater harvesting. It is allowed to seep into the soil instead of flowing down into the drains. It helps in raising the water table more efficiently

Plants need water to prepare their food. If water is not available to the plants, the green character of the plant shall be lost. That will mean the end of all life on earth.

Water is called a unique substance because it is the only substance which is used for variety of purposes and naturally maintained if used judiciously.

W - Water, X - Photosynthesis
Y - Food, Z - Oxygen

Yes, rising population leads to an increase in consumption and at the same time, a decrease in the seepage of water into the ground leads to the depletion of water table.

Workers get water from the underground water.

Rainwater and water from the other sources like rivers, ponds, etc are the source of groundwater.

About two-third of the earth's surface is covered with water

The excessive use of water leads to water scarcity in an area.

The reservoir of dam or river can release water at our will. We can divert the flow of water at desired places where it is really needed and we can manage water resource effectively.

The major surface area (71%) of the earth is covered with water. This imparts blue colour to the earth.

In ancient times, people used to make Bawris to store water