[Q]: Two friends were into natural sciences. Tom was more into Geology, while Rick studied Ecology. Which student read more about the many interactions among species within an ecosystem?
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[A]: Rick

[Q]: Rob got a compass as a present for his birthday. The magnet in the compass made him very interested in how magnets work. To understand magnets better he categorized objects in two groups, group A and group B. In group A all objects were magnetic, but in group B none of the objects was magnetic. Which group might not act as a magnet, group A or group B?
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[A]: group B

[Q]: John is a world traveler. Recently, he visited two countries, France and Germany. He noticed that in France they use atmosphere and Pascal as pressure units. In Germany they use torr as a pressure unit. Back in the United States, he noticed psi is used as a pressure unit. He needs to figure out how they correlate with each other. Which county is not using a unit established by mesuring the rise of mercury, Germany or United States?
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[A]: United States

[Q]: Two brothers went to the doctor's office for an appointment. The doctor discovered that Tim had very high levels of cholesterol, while Jim had normal levels. Which brother had fewer plaques that can restrict blood flow?
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[A]:
Jim