Question
Question: In a polluted lake, the index of pollution is...
In a polluted lake, the index of pollution is
A
BOD and Daphnia
B
DO and Artemisia
C
Presence of frogs
D
Diatoms larvae
Answer
BOD and Daphnia
In a polluted lake, the index of pollution is
BOD and Daphnia
DO and Artemisia
Presence of frogs
Diatoms larvae
BOD and Daphnia