Problem: Brad studied ancient human settlements from 100,000 years ago. His colleague Phil studied human settlement from 8-10,000 years ago. They were both fascinated by their findings. Which colleague studied that more people settled down in cities?

A: Phil

Problem: Kevin and his cousin Darlene both enjoy jogging for exercise. One day, Kevin goes out for a jog in his local neighborhood when the amount of heat outside is quite high, and he begins to sweat a lot and starts to feel a bit dizzy. On the same day, Darlene goes jogging in her neighborhood when the amount of heat outside is low and she feels perfectly normal as she continues to jog. Who is more likely to be experiencing electrolyte deficiency?

A: Kevin

Problem: Bobby and Kenny are two prolific farmers from Arkansas who have ponds located down stream from their farm sites. Bobby recently received a large order of potatoes from a neighboring city. Because of this order, Bobby has dramatically increased the amount of fertilizer he is using on his farm. Kenny mainly grows tomatoes, which are not in season right now, so his use of fertilizer is currently low. Over the past month there has been a large amount of rain falling on both Bobby and Kenny's farms. Who will cause less fertilizer to end up in the ponds near their farm?

A: Kenny

Problem: Sandra liked all creatures but loved to study frogs. Her sister Julie studied more about fish and butterflies. They both loved nature. Which sister learned more about males attracting female frogs to the bodies of water for mating?

A:
Sandra