[Q]: Jeremy works on a construction site operating a jackhammer and a large welding machine. Jeremy is frequently exposed to sounds with high decibel levels due to being around these machines so often. Jeremy's brother, Alexander, on the other hand works in a library. Unlike Jeremy, Alexander is frequently exposed to sounds with very low decibel levels during his work. Whose ears, Jeremy's or Alexander's, are more at risk of being damaged due to the sounds they encounter frequently?
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[A]: Jeremy's

[Q]: Pete lived in Alaska, but visited his friend Julia from Hawaii very often. They had many mutual interests, including geology and earthquakes. Which person lived closer to Kauai island?
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[A]: Julia

[Q]: Two brothers went to the doctor's office for a medical exam and blood tests. Dan found out he is healthy and had normal blood cholesterol and calcium levels. Ben however, was told that he had a disease called hypercalcaemia and had to start a treatment for that. Which brother didn't have excess calcium salts deposited in the kidneys?
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[A]: Dan

[Q]: White mountains are often visited by tourists because of the many beautiful caves, stalactites, stalagmites and karst phenomena. Dome mountains are interesting to tourists because they are very massive, of volcanic origin and excellent for climbing. Which mountain has a higher percentage of limestone in its composition?
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[A]:
White