Problem: Given the question: 2018 was a very wet year for the Four Corners area, because of the subtropical ridge, 2019, on the other hand was a dry year influenced by the same weather phenomenon that lacked strength in this year. Which month of the year was drier, September 2018 or September 2019?
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The answer is:
September 2019

Problem: Given the question: Two lands applied different economical measures over the last decade. Greenland increased productivity so they became wealthy and prosperous. Iceland chose to increase taxation and expand its government, they had little money to invest. Which country had more money to invest?
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The answer is:
Greenland

Problem: Given the question: Two students from the same class, studies different types of animals. Bill studied predators, while John studied grazers. Which student didn't find out that predators can be keystone species?
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The answer is:
John