[Q]: Mary and Ann met after a long time. Mary was 70 and she was Ann's aunt. She had a number of health problems. Ann was 52 and quite healthy. Which woman freed up less time for her grandchildren?
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[A]: Ann

[Q]: Two students studied animal behavior for the biology class. Ned studied more about predators, while Kim studied more about herbivores. Which student studied less about keeping grass from growing out of control?
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[A]: Ned

[Q]: Two geologists studied the Earth's crust. Benny studied mantle melting, while Vinny studied more about crust displacement. Which scientist didn't observe that added water triggers mantle melting?
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[A]: Vinny

[Q]: David was visiting Europe last summer. First he visited London. To his dismay, it was overcast all night. Then he flew to Rome. There the sky was as clear as you could get at night. David was very happy about it. In which place the Earth's surface would cool down faster, London or Rome?
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[A]:
Rome