Biological treatment of water pollution is done with the help of:
AFungi
BLichens
CNone of the above
DPhytoplanktons
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Correct answer
D. Phytoplanktons
Explanation
The correct answer is Phytoplanktons.
Correct answer
C. Pond ecosystem
Explanation
The correct answer is Pond ecosystem.
Correct answer
A. All of the above
Explanation
The correct answer is All of the above.
Correct answer
C. All of the above
Explanation
The correct answer is All of the above.
Correct answer
B. 180 db
Explanation
The correct answer is 180 db.
Correct answer
D. Both (a) & (b)
Explanation
The correct answer is Both (a) & (b).
Correct answer
D. Micro-organisms
Explanation
The correct answer is Micro-organisms.
Correct answer
D. All of the above
Explanation
The correct answer is All of the above.
Correct answer
A. The natural balance of our environment
Explanation
The correct answer is The natural balance of our environment.