Problem: In the sixteenth century the State of Michigan had forests all over. But that has long been gone. Especially, in the state's northeast part the vegetation has been cleared in the twentieth century. Wooded areas were replaced by farm lands. All these farmlands were under heavy Irrigation. At one time, in the sixteenth century, plant species like elm and oak used to be plentiful. We still had some elms and oaks in the twentieth century, but they were not great many in number. Which century saw northeast Michigan's water table at decreased level, sixteenth century or twentieth century?

A: sixteenth century
Problem: Given the question: In ancient Greece King Juno asked two of his court philosophers, philosopher A and philosopher B, to come up with two interesting problems. Philosopher A devised a clever paradox and presented it before the court. He called the paradox Problem A. But philosopher B didn't come up with a paradox. He too presented a clever problem which was not a paradox - he called it problem B. Which problem would more likely have logically unacceptable conclusion, problem A or problem B?
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The answer is:
problem A
input question: Rob is an environmental scientist. He is studying the effect of insect species on environment. For his study he chose four locations, location A, location B, location C and the entire globe, which he denoted as location D. He noticed location A's loss of biodiversity is temporary , but location B's loss is permanent. Location C's loss of biodiversity yet to be determined. Which location most probably suffered land loss or similar processes, location A or location B????
output answer: location B
Greg is studying the environmental impact of agriculture. He noticed that in his own state a lake near agricultural lands has been declared as a dead zone. For his study Greg labeled this zone as zone A. Then he found near a national park in his state a lake is not declared as a dead zone. To further his study he labeled this zone as zone B. Would zone B have less or more oxygen than zone A?
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Answer: more
Q: Brad had a friend that lived on Oahu, part of The Hawaiian Islands. The friend's name was Hank and he invited Brad over to visit the islands. Brad had never been there before, and he lived in London, UK. Which friend lived closer to Loih volcano?
A: Hank
[Q]: Two rivers spring from the same mountain. Olt was a fast moving river, while Mures river was slow moving and deep. Both rivers are very important for the local economies. Which river had a food source mostly derived from the trees?
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[A]:
Olt