Question: Two sister cities used different methods to produce electricity. London used fossil fuels, while Edmonton use entirely hydro power to generate energy. Given the paragraph above, please answer correctly the following question: Which city causes less air pollution?
Answer: Edmonton

Question: Mike was reading about climate change. The author compared two different time periods, era A and era B. Era A was set in the present day. But era B was set in the year 2040. Mike was surprised to find how Arctic area would change in the coming years. Given the paragraph above, please answer correctly the following question: Which period would see more ice in the Arctic, era A or era B?
Answer: era A

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. Given the paragraph above, please answer correctly the following question: Which country had a lower productivity?
Answer:
Iceland