Question

18. List various sources of water and their importance to living organisms.

Answer 1

Part 1: Sources of water

• There are various sources of water. About 71% of the Earth’s surface is covered with water.
• The three main sources of water are:
• Rainwater: It is a very important source of water.
• Groundwater: This includes water bodies like Wells and Springs.
• Surface water: This includes different water bodies like Sea, Oceans, Reservoirs, Rivers, Streams, Ponds, Lakes, and tanks.

Part 2: Importance of water to living organisms

Water is essential for all living beings. Some uses of water are the following:

• Domestic Purposes include bathing, cleaning, cooking, drinking, and washing.
• Agricultural applications include irrigation, farming, gardening, and frost control.
• Other Industrial Applications: Water is used in industries for producing all the things that we use.
• Water participates in the life process in three ways:

1. By taking part in biochemical reactions
2. by acting as a medium
3. By acting as a coolant.