The sludge that is a by-product of municipal sewage treatment
A. is volumetrically an insignificant problem.
B. is sufficiently purified and harmless that it can safely be dumped anywhere.
C. may be used as fertilizer, provided that it contains sufficiently low concentrations of toxic chemicals.
D. is entirely useless solid waste requiring planned disposal.
Answer: C
You might also like to view...
The longest wavelength on the electromagnetic spectrum are ________
gamma ultraviolet radio infrared
In the case of indoor air pollutants, increasing the insulation in a home will most likely
A) increase the risk of developing an infectious disease. B) decrease acute reactions to pollutants already in the home. C) decrease the chances of developing chronic respiratory diseases. D) increase the chances of developing chronic respiratory diseases.
Since 2008 the price per barrel of oil has not fluctuated much
Indicate whether the statement is true or false
In Von Thünen's model, crops and pastureland occupied the
A) First ring. B) Second ring. C) Third Ring. D) Fourth Ring. E) Hinterland.