[Q]: Two brothers were land owners. Bill owned 40 acres of forest, , with very well developed soil. His brother Rick owned 40 acres of grasslands, with a poor soil. Rick decided to sell his land. Which brother had more animals on his property?
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[A]: Bill

[Q]: Bend city used a lot of fossil fuels to generate electricity. Hop city, another city from the same county, used only alternative sources of energy. Which city caused fewer skin cancers?
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[A]: Hop

[Q]: John is a nuclear scientist who works at the Fermi lab. Today, in front of him he has four samples, sample A, sample B, sample C, and sample D. Sample A is the naturally occurring uranium. Sample B is enriched uranium. Sample C is the U-238, and sample D is the U-235. He needs to figure out how to best use them. Would sample C and sample D have same atomic mass or different atomic mass?
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[A]: different atomic mass

[Q]: Booneland changed their foreign exchange controls and Bradland didn't. The foreign currency got more expensive and they had problems with a shadow currency exchange. Bradland people were more cautious and less inclined to take risks, but didn't have those problems. Which country had a more shadow market problems?
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[A]:
Booneland