[Q]: Two different countries produced their electricity using different methods. Burma used fossil fuels such as coal and oil, while Bhutan used renewable energy sources. Which country released less carbon dioxide into the atmosphere ?
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[A]: Bhutan

[Q]: A scientist is analyzing two different sounds, one from a deer and one from a zebra, with a device that allows her to see the sound waves of each noise. While looking at the results, she sees that the sound waves for the deer are more closely packed together, but the zebra's sound has very spread out waves. Which animal's sound has a lower pitch?
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[A]: zebra

[Q]: Hill town was full of gasoline powered vehicles, while Valley town 50 miles away, banned all gas powered vehicles and allows only electrical vehicles or horse-and-buggies. Which town emitted more harmful materials?
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[A]: Hill

[Q]: Two teams were competing in a 5 km race. White team warmed up before the race, but Blue team arrived with a bus late and didn't have time to warm up properly before the race. Which team had more athletes with an increased heart rate before the race?
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[A]:
White