EXERCISE
Water
1. State the sources of water a) on the earth's surface b] below the earth's
2 Give the importance of water in a) life processes bj household purpose de
d] transportation
Answers
Explanation:
The vast majority of water on the Earth's surface, over 96 percent, is saline water in the oceans. The freshwater resources, such as water falling from the skies and moving into streams, rivers, lakes, and groundwater, provide people with the water they need every day to live.
. Although sea water is not potable, it has various other kinds of uses which prove its importance:
Water from oceans can be used for making hydroelectricity, a form of renewable source of energy.
It can be used as a cheap transport method.
They can be used for the activities like scuba diving, water sports etc. which is a means of boosting the tourism and economic growth of a country.
Nuclear power plants require coolants like water to bring down the temperature of the reactors. For this purpose several gallons of water is required and this demand is fulfilled by the water from oceans.
They support a variety of flora and fauna which have both ecological and economical value.
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