A trickling filter system is generally used
A) to remove dissolved organic matter.
B) to remove small objects.
C) to remove phosphorus.
D) to increase the amount of sewage sludge.
Correct Answer:
Verified
Q7: Which nutrient(s)stimulates algae and aquatic plant growth?
A)nitrates
Q8: Which of the following are important water
Q9: Laws regulating access to the water in
Q10: All of the following are examples of
Q11: Unpolluted freshwater supplies
A)are available to most of
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
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