Q. A lake which is rich in organic waste may result in
A) Increased population of aquatic organisms due to minerals
B) Drying of the lake due to algal bloom
C) Increased population of fish due to lots of nutrients
D) Mortality of fish due to lack of oxygen
Explanation
[Solution] Decomposition of organic waste raises BOD and depletes dissolved oxygen, killing fish. Answer (4).
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.