The bacterial biofilms and floating weeds interact in duckweed ponds r – McqOptions

MCQOPTIONS

1.	The bacterial biofilms and floating weeds interact in duckweed ponds resulting in decrease of nutrient load and _______ in waste water.
A.	Organic pollutant
B.	Fish biomass
C.	Oxygen
D.	Water
Answer» B. Fish biomass

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