1.why 97% of water present on earth cannot be used for cooking,irrigation and industries
2.what is the purest form of the fresh water
3.what % of fresh water is available to us
Answers
Explanation:
1. Because 97% of that water is salt water from seas and oceans.
2.Rain water
3. 3% of freshwater is available for us.
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Answer:
1. Oceans, which are the largest source of surface water, comprise approximately 97 percent of the Earth's surface water. However, since the oceans have high salinity, the water is not useful as drinking water. Efforts have been made to remove the salt from the water (desalination), but this is a very costly endeavor.
2. Rain water is considered the purest form of water. Impurities and salts present in water on earth are left behind during vaporisation by the sun.
3. 0.5% of the earth's water is available fresh water. If the world's water supply were only 100 liters (26 gallons), our usable water supply of fresh water would be only about 0.003 liter (one-half teaspoon). In actuality, that amounts to an average of 8.4 million liters (2.2 million gallons) for each person on earth
Explanation: