Robert studied two groups of patients. Group O had mild allergy symptoms, while group R displayed severe allergy symptoms. Which group didn't experience a runny nose?
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Answer: group R

Jeremy works on a construction site operating a jackhammer and a large welding machine. Jeremy is frequently exposed to sounds with high decibel levels due to being around these machines so often. Jeremy's brother, Alexander, on the other hand works in a library. Unlike Jeremy, Alexander is frequently exposed to sounds with very low decibel levels during his work. Who is exposed to sound waves with greater intensity?
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Answer: Jeremy

Two neighboring counties used different agricultural methods on their farm fields. Cook county used many fertilizers and pesticides, while Dane county used only organic methods and no pesticides. As a result, the waters in Dane county were cleaner. Which county polluted fewer lakes?
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Answer:
Dane