Sludge that contains heavy metals
A) can best be eliminated through burning.
B) is hazardous to health.
C) makes especially good fertilizer.
D) is rarely found in sewage treatment facilities.
Correct Answer:
Verified
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Q34: Water is usually disinfected in
A)home filter systems.
B)community
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A)skin cancer.
B)arthritis.
C)hearing
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