Z During secondary treatment or biological treatmen which of the following do not happen (1) Decrease in BOD (2) Production of organic matter by microbes (3) Consumption of organic matter (4) Increase in DO

Biology 2e
2nd Edition
ISBN:9781947172517
Author:Matthew Douglas, Jung Choi, Mary Ann Clark
Publisher:Matthew Douglas, Jung Choi, Mary Ann Clark
Chapter46: Ecosystems
Section: Chapter Questions
Problem 37CTQ: Why are drinking water supplies still a major concern for many countries?
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option 2 is right answer please provide right explanation. I asked previously u guys provided wrong option and wrong explanation

64 During secondary treatment or biological treatment
which of the following do not happen
(1) Decrease in BOD
(2) Production of organic matter by microbes
(3) Consumption of organic matter
(4) Increase in DO
Transcribed Image Text:64 During secondary treatment or biological treatment which of the following do not happen (1) Decrease in BOD (2) Production of organic matter by microbes (3) Consumption of organic matter (4) Increase in DO
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