[Q]: Customers bought two types of electrical ovens, type A and type B. They were all happy at first but type B ovens started to short circuit. Which type of oven had more overheated wires?
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[A]: type B

[Q]: Two city situated on the shores of a large ocean polluted it in different ways. Truck city had an economy that was based on tourism, while Farm city was based on agriculture. Which city caused more beach litter?
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[A]: Truck

[Q]: Barb and Dee studied chemistry for a school project. After little debate they decided that Dee will study volatile gases, and Barb will study greenhouse gasses. Which girl studied more about short wavelength solar energy?
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[A]: Barb

[Q]: Greg is studying the environmental impact of agriculture. He noticed that in his own state a lake near agricultural lands has been declared as a dead zone. For his study Greg labeled this zone as zone A. Then he found near a national park in his state a lake is not declared as a dead zone. To further his study he labeled this zone as zone B. Which zone is a result of algae overgrowth, zone A or zone B?
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[A]:
zone A