Tree city and Leaf city were the two biggest cities in Boulderland. Tree city burned lots of gas and other fossil fuels, while Leaf city was very protective towards its environment. Which city caused less air pollution?
Ans: Leaf

Uncle Tom and uncle Sam both have high cholesterol. Uncle Tom is on statin drugs and uncle Sam is not. Which uncle doesn't take a drug that works slightly differently in many people?
Ans: Sam

Two women have just undergone different types of mutations without them being aware of it. Kim has just had a mutation in the DNA of her sex cells. Holly has had a mutation in her body cells. Both mutations would be able to be discovered if they happen to go to a doctor, and the doctor knows to look for it, but that is unlikely since the women are unaware these changes happened. Whose mutation is less likely to cause cancer?
Ans: Kim

David was trying to see how steam engines work. For that, he conducted two tests, test A and test B. In test A, he used low temperature. On the other hand, in test B, he used high temperature. David started thinking about how he could use the results of his tests in everyday life. Which test would see lower kinetic energy, test A or test B?
Ans: test A