Problem: Given the question: Two new planets have just been discovered in our solar system. Scientists have just landed on both and are in the process of analyzing the environment and atmosphere of each planet. What is immediately apparent is that both planets are remarkably similar to Earth since both are oxygen rich and do not require a space suit to breathe. Another similarity that one of the planets, Jarthrow, has with Earth is that it naturally outputs approximately the same amount of greenhouse gases into the atmosphere as Earth does. The other planet, Millhouse, outputs about twice as many greenhouse gases. Climate scientists are rushing to try to see if anything new can be discovered to help out our planet with these new discoveries. Will Jarthrow have a higher or lower temperature than Millhouse?
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The answer is:
lower

Problem: Given the question: Greg is an environmental scientist. He wants to know how earth's atmosphere differed in two different time. To that end, he selected two time periods, time A and time B. Time A is set in the year one thousand when using fossil fuels was not very common. Time B is set in the year two thousand when fossil fuels are used in large quantities. In which time less carbon dioxide would be realeased into the atmosphere, time A or time B?
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The answer is:
time A

Problem: Given the question: Two cities had different energy source. Big city burned fossil fuels, while Blue city used alternative sources of energy. Which city produced more carbon dioxide?
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The answer is:
Big