Discussion :: Environmental Science
- High biological oxygen demand indicates:
|
A.
absence of microbial pollution |
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B.
moderate microbial pollution |
|
C.
intense level of microbial pollution |
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D.
all of these |
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Answer : Option C
Explanation :
BOD indicates the amount of putrescible organic matter present in water. Therefore, a low BOD is an indicator of good quality water, while a high BOD indicates polluted water. Dissolved oxygen (DO) is consumed by bacteria when large amounts of organic matter from sewage or other discharges are present in the water.
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