The students studied two ponds. Class A studied a pond filled with protozoa, while class B studied a pond with almost no protozoa. Which class observed more parasitic protozoa?
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Answer: Class A

Two groups of people when to the doctor. Group A had myopia, while group B had nearsightedness. Both groups got eyeglasses for their conditions. Which group didn't have their people inherit their condition?
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Answer: group B

Two brothers had very bad luck when they attended a wedding. Tom fell violently ill after eating some tainted food, and he was rushed to the hospital. His brother Rob felt sick later, after eating the main course. Tom was infected with norovirus and hepatitis A, while Rob was infected with Giardia and Trichinella. Which brother got a type of roundworm parasite?
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Answer:
Rob