Human Anatomy & Physiology (11th Edition)
11th Edition
ISBN:9780134580999
Author:Elaine N. Marieb, Katja N. Hoehn
Publisher:Elaine N. Marieb, Katja N. Hoehn
Chapter1: The Human Body: An Orientation
Section: Chapter Questions
Problem 1RQ: The correct sequence of levels forming the structural hierarchy is A. (a) organ, organ system,...
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Why does secondary treatment of wastewater require O2?
A. Secondary treatment relies on anaerobic microbes to oxidize organic material.
B.Secondary treatment relies on anaerobic microbes to reduce organic material.
C.Secondary treatment relies on aerobic microbes to oxidize organic material.
D.Photosynthetic bacteria are involved in secondary treatment and they require O2.
E. Flocs require oxygen to facilitate biofilm formation.
Expert Solution
Step 1
Secondary treatment is a part of wastewater disposal system, where the sewage or other waste waters are treated in treatment plants before disposal.
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