Multiple Choice
The implementation of regular garbage collection, sewage treatment, food inspection, and other steps to preserve public health happened partly as a result of the discovery of ________, which are microorganisms that result in diseases.
A) plague
B) insects
C) pathogens
D) pollutants
Correct Answer:

Verified
Correct Answer:
Verified
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Q4: For the first time in history, there
Q5: Radioactive waste from nuclear power plants is
Q6: Which substance is a major indoor air
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