Q. What is the reason for mortality of fish in water body? (Solved)
1. Biodegradation of organic matter by microbes
2. Due to algal bloom
3. Due to decrease in BOD
4. a and b both
- a. Biodegradation of organic matter by microbes
1. Biodegradation of organic matter by microbes
2. Due to algal bloom
3. Due to decrease in BOD
4. a and b both