Two sister countries used petroleum in different ways. Norway used it to make plastics, while Sweden used it for fuel. Which country used more fuel for trucks?
Ans: Sweden

Two brothers got sick and weren't feeling well. Strangely enough they found out they were infected with viruses. Tom was infected with human papillomavirus, while Chris was infected with hepatitis. Which brother was less at risk of developing anal cancer?
Ans: Chris

Two friends decided to lose weight. Tammy started eating healthier, she only used organic products. Fay reduced the number of calories, but still ate conventional food and produce. Which friend ate more food from farms with fewer antibiotic resistant pathogens?
Ans: Tammy

John was studying the species in Siberia. He found that the Siberian tiger is an apex predator. It had a pretty stable population during the sixteenth century. He noted that information as case A. Then with the introduction of guns the number of Siberian tigers decreased in the seventeenth century. He noted that information as case B. Which case would less likely see disruption of trophic cascades, case A or case B?
Ans: case A