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. Given the paragraph above, please answer correctly the following question: Which test would see decrease in pressure, case A or case B?
Ans: case A

Two neighboring countries of similar size and wealth of resources had different sized population. Deerland had a small population, while Bearland had a large population. Both peoples lived mostly off the land. Given the paragraph above, please answer correctly the following question: Which country had more food per individual?
Ans: Deerland

John an Keith are coworkers in a chemistry lab. Yesterday, they conducted there tests, test A, test B, and test C. In test A, John kept a substance in solid state, but Keith changed the same substance from solid to liquid state. In test B, John conducted a chemical reaction in low temperature, but Keith conducted the same chemical reaction in high temperature. Finally, in test C, John kept an unstable material in room temperature, but Keith kept the same unstable material in a cool container. Given the paragraph above, please answer correctly the following question: In test A, whose substance would have higher temperature, John or Keith?
Ans: Keith

A team of scientists studied two groups of mice. Group C was exposed to carcinogens, while group N was not. Given the paragraph above, please answer correctly the following question: Which group of mice had less tumor development?
Ans: group N