In the sub-Saharan African country of Nigeria, there are two main species that tend to travel in groups. The antelope tend to travel in groups in high numbers, and thus exhibit a high density. Meanwhile, the bison tend to travel in groups of small numbers, and therefore exhibit low density. Both the antelope and the bison have natural predators that exist in Nigeria. Individuals from which species, the antelope or the bison, will have higher rates of predator vigilance behavior?
Ans: the bison

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 more carbon dioxide to be used in the ponds near their farm?
Ans: Bobby

Two brothers Syd and Dan went to college. Syd studied plate tectonics and mantle melting. His brother Dan got to study types of soil and pedology. Which brother studied more about rising temperatures influencing mantle melting?
Ans: Syd

Jennifer is looking to move to a new city. She has always wanted to live in a coastal town, and she has narrowed her options down to two. She is looking to live in either Malarn or Trainlan. Malarn is known for its peppersteaks and its active nightlife. Malarn also regularly gets a large amount of dust in the air from a desert located across the ocean. Trainlan has a very famous art museum in its city, and being an art fanatic, that greatly appeals to Jennifer. She is planning to take a trip to both cities sometime in the near future to see them in person before making her decision. Are the coral reefs near Malarn more or less healthy than the reefs near Trainlan?
Ans: less