Problem: 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. Which zone is a result of algae overgrowth, zone A or zone B?

A: zone A

Problem: Margaret is a sophomore in high school who just started her Spring break. With a week off from school, her family is spending some time driving out of state to visit her grandma, Kathy, who has a cabin up in the snowy mountains. Margaret always enjoys spending time with her grandma because she has interesting stories and makes some of the best pie around. Also, they always go skiing when visiting the cabin so Margaret is excited for that. Will Margaret be able to ski more or less than Kathy?

A: more

Problem: Boone county experienced severe weather last week as a result of atmospheric convection. White county to the east experienced some rain but was sheltered from this phenomenon because of the mountain range. Which county experienced less temperature difference layer in the atmosphere?

A: White

Problem: The ecologist moved from Aspen, where there was no air pollution, to Seattle which experienced a lot of air pollution. He started studying the weather there as well. Which city had rain with a lower pH?

A:
Seattle