[Q]: Adam and his older brother Chris were born almost 15 years apart from each other. Adam is 27 now which means Chris is 41. Lately Chris has started noticing grey hairs come in. When Adam and him play games together Chris also seems to lose more often now even though historically he has always been better. Which of the brothers is likely showing more signs of aging, Adam or Chris?
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[A]: Chris

[Q]: Ben and Mike both studied earthquakes, while Mike was more interested specifically in mantle melting and related phenomena. Which person studied less about volcanoes at convergent plate boundaries?
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[A]: Ben

[Q]: David is an environmental scientist. Last summer he visited the tropical forest in Brazil. He labeled that part of his study as forest A. To understand the differences between forests he then visited the temperate forest in Germany. He labeled that part of his study as forest B. He found significant differences in these two types of forests. Which forest would produce less carbon per square meter, forest A or forest B?
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[A]: forest B

[Q]: Many pro cyclists joined 2 races this month: Bay village race on the 17th, and Hill village bike race on the 25th. Bay village race took place on the shores of the nearby bay, while Hill race took place on the hills and valleys 10 miles away. Bay village race competitors experienced bad weather: a thunderstorm took place during the first hour of the competition. Which race had fewer cyclists braking by resisting the forward motion of the pedals?
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[A]:
Hill