What is B.O.D.
- The amount of O2 utilised by organisms in water
- The amount of O2 utilized by micro organisms for decomposition
- The total amount of O2 present in water
- All of the above
The Correct Option is B
Solution and Explanation
B.O.D. stands for Biological Oxygen Demand, and it is a measure of the amount of oxygen that microorganisms in water consume while decomposing organic matter. B.O.D. is a key indicator of water quality and pollution levels in aquatic ecosystems. Therefore, the correct option is (B): The amount of O2 utilized by microorganisms for decomposition
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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