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15
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Which of the following is NOT a greenhouse gas?
carbon dioxide
water vapor
methane
oxygen
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15
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What is the rise in the Earth's average surface temperature over the last 100 years called?
carbon dioxide
climate change
deforestation
global warming
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15
×
Which of the following is known to reflect sunlight back into the atmosphere and help cool the planet?
aerosol
melanin
methane
carbon dioxide
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15
×
How much is the population on Earth supposed to increase by 2050?
4 billion
6 billion
3 billion
8 billion
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boom
Lose 50 points!
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magnet
Take 5 points!
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fairy
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5
10
15
20
25
×
baam
Lose 20 points!
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15
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What is one positive aspect of global warming?
glaciers are melting
there is less rain
there are more mudslides
farmers get longer growing seasons
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