Please answer this: Karen studied animals in school. She started studying predators for a school presentation. She liked it. Her friend Molly liked cows, sheep and other herbivores, so she decided to do a presentation about grazers, and their role in nature. Which girl learned less about animals that can be keystone species?
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Answer: Molly

Please answer this: Two brothers got sick and weren't feeling well. Strangely enough they found out they were infected with viruses. Tom was infected with human papillomavirus, while Chris was infected with hepatitis. Which brother was more at risk of developing skin cancer?
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Answer: Tom

Please answer this: Barry and Will are two geologists. Barry is specialized in subduction zones and new seafloor. Will is specialized in montology. Which person learned less about destruction of oceanic crust?
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Answer:
Will