Question:

Phosphate pollution is caused by:

Updated On: Jan 30, 2025
  • Sewage and agricultural fertilizers.
  • Weathering of phosphate rocks only.
  • Agriculutral fertilizers only.
  • Phosphate rocks and sewage.
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The Correct Option is A

Solution and Explanation

Phosphate pollution in the water is directly related to the release of the untreated sewage and agriculture fertilizers into the water body. This results in excessive algal bloom that forms a thick layer on the surface of the water and prevents the sunlight and oxygen from getting into the water. As a result, the underlying aquatic animals and plants suffocate and die. When this algal bloom dies, it further enhances the eutrophication process, greatly decreasing the dissolved oxygen in the water.
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Concepts Used:

Water Pollution

  • Water pollution means the contamination of water bodies such as seas, lakes, rivers, aquifers, oceans, and groundwater caused majorly due to inhuman activities with industrial and agricultural effluents. It is the change of chemical, biological, or physical properties of water that will result in a destructive consequence for living organisms.
  • Portable water is considered safe for human and animal consumption as well as used for drinking, cooking, crop irrigation, washing, etc,. Nowadays, chemicals, bacteria, and other pollutants are also influencing this. It adversely acts on all the living forms, directly or indirectly depending upon the source. The effects of water pollution can be felt for years to come.

Sources of Water Pollution:

The following are the major sources of Water Pollution:

  • Domestic Waste
  • Urbanization
  • Deforestation
  • Industrial effluents
  • Social and Religious Practices
  • Insecticides and pesticides
  • Detergents and Fertilizers