Problem: Two farms were situated on opposite banks of a large river flowing into the ocean. Hill farm practiced conventional agriculture, while Dew farm practiced permaculture design within the context of organic farming.  Which farm generated fewer marine dead zones because of livestock and human waste?

A: Dew


Problem: The explorers visited Galapagos 1 and Galapagos 2, both islands part of the same archipelago. Island 1 had experienced a drought in recent years. Both islands had populations of birds living there.  Which island had fewer small-beaked birds that could only crack open smaller seeds?

A: Galapagos 2


Problem: A team of scientists studied two groups of mice. Group C was exposed to carcinogens, while group N was not.  Which group of mice had fewer cells to divide out of control?

A: group N


Problem: Two competing countries used different energy sources to produce their electricity. Turkey used mostly fossil fuels, while Greece used nuclear power.  Which country used more coal?

A:
Turkey