what is meant by water pollution how does it occur state any four sources of water pollution.
{4 Mark} give easy and detailed information.. thanks
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Answered by
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hey buddy !! here's your answer...
✔️water pollution means contamination of water bodies like sea, rivers, lakes , underground water, etc. with harmful chemicals. Overall it means decrease in quality of water .
the four sources are ...
➡️industrial effluents - industries pour tge contaminated water used by them directly into water bodies and don't clean it.
➡️sewage - cities sewage is directly poured into water bodies. instead it should have been cleaned in sewage treatment plants.
➡️fertilizers and insecticides - they are water soluble hence seep underground thus contaminating underground water.
➡️thermal power plants - they require huge quantity of water as coolant. they pour extremely hot water back into water bodies thus cause killing of many aquatic animals
hope it helps !!❤️✌️
#ve brainly ✌️
✔️water pollution means contamination of water bodies like sea, rivers, lakes , underground water, etc. with harmful chemicals. Overall it means decrease in quality of water .
the four sources are ...
➡️industrial effluents - industries pour tge contaminated water used by them directly into water bodies and don't clean it.
➡️sewage - cities sewage is directly poured into water bodies. instead it should have been cleaned in sewage treatment plants.
➡️fertilizers and insecticides - they are water soluble hence seep underground thus contaminating underground water.
➡️thermal power plants - they require huge quantity of water as coolant. they pour extremely hot water back into water bodies thus cause killing of many aquatic animals
hope it helps !!❤️✌️
#ve brainly ✌️
Answered by
6
Water is typically referred to as polluted when it is impaired by anthropogenic contaminants. Due to these contaminants it either does not support a human use, such as drinking water, or undergoes a marked shift in its ability to support its biotic communities, such as fish. Natural phenomena such as volcanoes, algae blooms, storms, and earthquakes also cause major changes in water quality and the ecological status of water.
Water pollution is a major global problem. It requires ongoing evaluation and revision of water resource policy at all levels (international down to individual aquifers and wells). It has been suggested that water pollution is the leading worldwide cause of death and diseases,[2][1] and that it accounts for the deaths of more than 14,000 people daily.[1]
India and China are two countries with high levels of water pollution: An estimated 580 people in India die of water pollution related illness (including waterborne diseases) every day.[8] About 90 percent of the water in the cities of China is polluted.[9] As of 2007, half a billion Chinese had no access to safe drinking water.[10]
In addition to the acute problems of water pollution in developing countries, developed countries also continue to struggle with pollution problems. For example, in a report on water quality in the United States in 2009, 44 percent of assessed stream miles, 64 percent of assessed lake acres, and 30 percent of assessed bays and estuarine square miles were classified as polluted.[11]
Water pollution is a major global problem. It requires ongoing evaluation and revision of water resource policy at all levels (international down to individual aquifers and wells). It has been suggested that water pollution is the leading worldwide cause of death and diseases,[2][1] and that it accounts for the deaths of more than 14,000 people daily.[1]
India and China are two countries with high levels of water pollution: An estimated 580 people in India die of water pollution related illness (including waterborne diseases) every day.[8] About 90 percent of the water in the cities of China is polluted.[9] As of 2007, half a billion Chinese had no access to safe drinking water.[10]
In addition to the acute problems of water pollution in developing countries, developed countries also continue to struggle with pollution problems. For example, in a report on water quality in the United States in 2009, 44 percent of assessed stream miles, 64 percent of assessed lake acres, and 30 percent of assessed bays and estuarine square miles were classified as polluted.[11]
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