● Water is one of the most important substances on earth.
● All plants and animals must have water to survive.
● If there was no water there would be no life on earth. Apart from drinking it to survive, people have many other uses for water.
● Fresh water is used by all living beings except marine organisms. They use sea water.
● Fresh can be obtained from three natural sources.
● Natural sources of fresh water are rain, surface water, and groundwater.
● The body of living beings is composed of water.
● Water is required for all the chemical reactions such as digestion, excretion in the body (metabolism), similarly plants need water for growth, photosynthesis, respiration and other metabolic reactions require water.
● Therefore, water is a valuable resource.
