How does water get polluted?
Important Questions on Pollution of Air and Water
Study the picture given below and answer the following question:
Name one pollutant that causes the above pollution.
Study the picture given below and answer the following question:
Identify the type of pollution.
Study the picture given below and answer the following question:
State one measure to control this pollution.
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Mention the impact of this pollution on human health.
Study the picture given below and answer the following question:
What is a ‘Pollutant’? Explain the term.
Give the biological reasons for the following statement:
Water pollution is a major cause of concern in our country.
_____ pollution can lead to the spread of dysentery and cholera.
Read the passage and answer the following questions.
Water Pollution
Water pollution is the contamination of water bodies and is harmful to the health of humans and animals. It may not damage our health immediately but can be harmful after long-term exposure. Different forms of pollutants affect the health of animals in different ways: (a) heavy metals from industrial processes can accumulate in nearby lakes and rivers. These are toxic to marine life such as fish and shellfish, and subsequently to the humans eat them. (b) Microbial pollutants from sewage often result in infectious diseases that infect aquatic life and terrestrial life through drinking water. Microbial water pollution is the major problem in the developing world, with diseases such as cholera and typhoid being the primary cause of infant mortality. (c) Organic matter and nutrients cause an increase in aerobic algae and deplete oxygen from the water column. This causes the suffocation of fish and other aquatic organisms. (d) Sulfate particles from acid rain can cause harm to the health of marine life in the rivers and lakes it contaminates and can result in mortality. (e) Suspended particles in freshwater reduce the quality of drinking water for humans and the aquatic environment for marine life. Suspended particles can often reduce the amount of sunlight penetrating the water, disrupting the growth of photosynthetic plants and microorganisms.
What is water pollution?
