Q. The oxygen concentration at the floor of the deep ponds and lakes is very low because of the
A) Over-hanging column of water
B) Lesser amount of sunlight
C) Decomposers
D) Large number of annual inhabitants
Explanation
The oxygen concentration at the floor of the deep ponds and lakes is very low because of the lesser amount of sunlight.
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.