Which one of the following is the most appropriate source of water pollution?
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This question was previously asked in
Shift 11/06/2023 3:30 PM - 6:30 PM
A
Sewage disposal
B
Combustion of coal
C
Water transportation
D
Advertising Media
Correct Answer
Sewage disposal
Detailed Explanation
- Sewage disposal is a significant and common source of water pollution.
- Improper disposal of sewage, which includes domestic and industrial wastewater, can lead to the contamination of rivers, lakes, and other water bodies. Sewage often contains a variety of pollutants, including pathogens (bacteria, viruses), nutrients (nitrogen and phosphorus), organic matter, and chemicals.
- Untreated or inadequately treated sewage can introduce harmful pathogens into water sources, posing serious health risks. Waterborne diseases such as cholera, dysentery, and gastroenteritis are associated with the ingestion of water contaminated with human or animal waste.
- Sewage contains nutrients such as nitrogen and phosphorus. When released into water bodies, these nutrients can lead to eutrophication, a process where excessive nutrient levels stimulate the growth of algae and other aquatic plants. This can result in oxygen depletion, harm aquatic life, and disrupt the balance of ecosystems.
- Industrial discharges in sewage can introduce various chemical pollutants into water. These may include heavy metals, toxic chemicals, and other substances that can have detrimental effects on aquatic ecosystems and human health.
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