Question

Biological pollution in water is caused by

• A. coal mines
• B. domestic sewage and animal excreta
• C. all of these
• D. chemicals like paint

Answer 1

The correct option is C all of these

• Biological pollution (impacts or bio pollution) is the impact of humanity's actions on the quality of the aquatic and terrestrial environment. Thus Biological pollution of water refers to pollution of water due to human actions.
• Biological pollution in water is caused by coal mines, domestic sewage, and animal excreta and chemicals like paint.
• So, the correct answer is 'all of these'.