Problem: Ken is an avid mountain climber. This year he reached the summits of two mountains, mountain A and mountain B. Mountain A is only 5000 ft tall while mountain B is 15000 ft tall. He has also learned a fun fact that water boils faster and at lower temperature at low atmospheric pressure. If Ken wants to boil water faster, which mountain summit would he choose, mountain summit A or mountain summit B?

A: mountain summit B

Problem: David was visiting Japan. First, he went to Fukushima where the recent nuclear plant disaster happened. He found the city still had very high radiation. Then he visited Hiroshima. He found that Hiroshima had some low radiation. Finally, he visited the capital city Tokyo. He found that Tokyo did not have any radiation. In which city a Geiger counter would not produce electirc current, Fukushima or Tokyo?

A: Tokyo

Problem: Russian research spent most of their time in Antarctica to study the loss of ozone in the atmosphere. The Canadian team went north of the Polar Circle, close to the North Pole to do the same thing. They spent several months there. Which team was farther from the ozone hole in the atmosphere?

A: Canadian

Problem: A large group of bears lives in a forest. Over time the climate of the forest changes and becomes very cold. Some of the bears have thicker fur while some of the others have thinner fur. Due to the cold weather the bears with thinner fur die earlier. Also the bears with thicker fur have an easier time finding mates. Because of this the bears with thick fur have their traits passed on more often and bears with thin fur appear less and less in the population Which trait would be passed on to future generations if the forest became even colder, thick fur or thin fur?

A:
thick fur