Two farmers sold their produce and milk on a large nearby market. John practiced organic farming and also produced organic milk, while Danny sold non-organic produce and milk. Which farmer sold more foods free from agents that could cause human diseases?
Ans: John

Bob just came from a hot air balloon ride. On his way home he saw two balloons, balloon A and balloon B. Balloon A was flat, but balloon B was inflated. He was wondering how balloons go up so effortlessly. Which balloon would have higher inside pressure, balloon A or balloon B?
Ans: balloon B

Two students from the same class, studies different types of animals. Bill studied predators, while John studied grazers. Which student found out that a single species could become dominant over others?
Ans: Bill

Pam and Jane were two researchers. Pam studied sedimentary rocks while Jane studied volcanoes and related phenomena, such as earthquakes. Which researcher observed the size of earthquakes increasing before a volcanic eruption?
Ans: Jane