Ned learned about reactions at a higher temperature for his physics class, while Paul had to learn about reactions at lower temperatures. Which person studied about a slower reaction rate?
Ans: Paul

Tom and Jim go running together once a week. This week Jim skipped his warm up before exercising, because he was a bit late. Tom warmed up properly before running. Which runner didn't have an increased blood flow to the muscles?
Ans: Jim

Bob and Andy were two nature enthusiasts. They went camping together once a month. Bob was into bird watching, while Andy was fascinated with frogs and salamanders. They went on a trip last week-end and they were very happy with what they had observed. Which friend heard more males producing a mating call?
Ans: Andy

John is a nuclear scientist who works at the Fermi lab. Today, in front of him he has four samples, sample A, sample B, sample C, and sample D. Sample A is the naturally occurring uranium. Sample B is enriched uranium. Sample C is the U-238, and sample D is the U-235. He needs to figure out how to best use them. Which sample would more likely be used as fuel, sample C or sample D?
Ans: sample D