Lawmakers were debating the pros and cons of Keystone XL Pipeline. One group of lawmakers proposed that the pipeline be constructed. They put their proposal in proposal A. The rival group of lawmakers proposed that the pipeline should not be build. They put their proposal in proposal B. Lawmakers would now have to choose one of the proposals. Which proposal might not contaminate the aquifer, proposal A or proposal B?
Ans: proposal B

Nicaragua is one of the most biodiverse countries in the Americas. They boast over five hundred species of birds, and thousands of species of plants. Across the pond in England the situation is completely different. Centuries of extensive farming, industrialization, and urban sprawls have made it one of the least biodiverse place on Earth. Would the ecosystem functions be less or more stable in Nicaragua than in England?
Ans: more

Two continents were separated by a large ocean. Oceania had milder weather and experienced common weather phenomena, while Lemuria experienced natural disasters. Which continent experienced fewer hurricanes?
Ans: Oceania

Two neighboring countries implemented different sets of economic reforms. The reforms took over a decade to implement, but the effects were not similar at all. Redvania was more prosperous and it became much richer, while Blueland stagflated and the inhabitants were not pleased with the outcome. Which country had a higher life satisfaction index after 10 years?
Ans: Redvania