[Q]: Two cities situated on the shores of a large ocean polluted it in different ways. Truck city had an economy that was based on tourism, while Farm city was based on agriculture. Which city caused more dead zones?
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[A]: Farm

[Q]: Two high school buddies, Dan and Bob, had very different lifestyles 30 years later. Dan made only healthy lifestyle choices, was vegan. Bob ate meat, cheese and didn't care about his health and didn't protect himself. Which man was exposed to a lower risk of cancer, Dan or Bob?
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[A]: Dan

[Q]: In central Ireland there are two farms next to two very similar lakes, and both farms use the same fertilizer to grow crops. The farm next to lake Montopeke gets rain on a regular basis and so the farmer doesn't need to water his crops as much. The farm that is adjacent to lake Costanza hardly gets any rain at all though. Both farms are able to prosper and do well though despite the different amount of rain they get. Does lake Montopeke have more or less oxygen than lake Costanza?
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[A]: less

[Q]: Two brothers, Tom, aged 26, and Paul, aged 16 were into sports. Tom started weight-lifting to gain more muscle mass. Three years later he was 20-25 lbs. heavier. Paul started track and field, he liked running. Which brother's bones responded to strain from increased muscle activity?
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[A]:
Tom