Multiple Choice
In which step of water purification does water move through sand beds and activated charcoal?
A) Chlorination
B) Aeration and settling
C) Sedimentation
D) Storage
E) Filtration
Correct Answer:
Verified
Correct Answer:
Verified
Q3: Primary sewage treatment includes<br>A)sludge digesting.<br>B)skimming.<br>C)filtration.<br>D)chlorination.<br>E)aeration.
Q3: A clinic nurse at the county health
Q4: Which of the following is least likely
Q5: Which of the following did not contribute
Q7: After secondary treatment,treated wastewater can usually be
Q9: Which of the following activities/processes depends upon
Q10: Backyard composting in either a pile or
Q11: The breakdown of man-made compounds by decomposers
Q12: The incidence of which disease is most
Q13: Agricultural water run-off,rich in nitrates,ammonia,and phosphates,may be