The U.S. produces its energy using fossil fuels, while Germany uses nuclear power plants as their main energy source. The two countries impact the environment in different ways. Which country causes less acid rain?
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Answer: Germany

Two families had children that played together in the park. Jones family were anti-vaxxers, so they never vaccinated against any disease. Dean family did all the required vaccinations. Which family was exposed to pathogens on purpose?
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Answer: Dean

Students learned about protozoa in school this week. Dan and Jim were interested and read more on the subject. Dan read more about predatory protozoa, while Jim read more about herbivore protozoa. Which student read more about protozoa preying upon single-celled organisms?
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Answer:
Dan