[Q]: Two students studied chemistry. Nate studied alkanes, and Ben studied noble gasses. They both got an A later on. Which student learned more about the melting point of alkanes?
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[A]: Nate

[Q]: People of Iran had more respiratory diseases caused by fungi and viruses, while their neighbor Iraq had more disease caused by bacteria. Which country had fewer people with cold?
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[A]: Iraq

[Q]: Planet Earth and planet Mars both had breathable atmospheres and were inhabited by humans. People of Earth destroyed the ozone layer, people of mars were more careful and protected it. Which planet had higher levels of UV radiation reaching its surface?
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[A]: Earth

[Q]: Two friends, John and Abe, worked at the same warehouse. John was exposed to very strong light all the time, while Abe worked in a more normal environment. John started experiencing health problems after a while. Which worker was influenced less by improper spectral composition, John or Abe?
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[A]:
Abe