What is biochemical oxygen demand?
A) amount of oxygen required to decay a certain amount of organic matter
B) a necessary material that is in short supply
C) method by which settled organic matter is returned to aeration tanks
D) None of these are correct.
Correct Answer:
Verified
Q13: Groundwater
A)is in porous rock and does not
Q14: Thermal pollution of water is primarily from
A)runoff
Q15: Which of the following is a source
Q16: Which of the following is NOT a
Q17: Water enters the atmosphere because of
A)plants releasing
Q19: Eutrophication occurs when
A)nutrient increase causes excessive aquatic
Q20: The amount of oxygen required to decompose
Q21: Which of the following involves the removal
Q22: Which of the following best matches the
Q23: What percent of sewage is treated in
Unlock this Answer For Free Now!
View this answer and more for free by performing one of the following actions
Scan the QR code to install the App and get 2 free unlocks
Unlock quizzes for free by uploading documents