Problem: John wanted to see how he would fare in high altitude compared to ground-level. So, he first measured his responses in ground-level. He labeled this part of the study as case A. Then he board on an airplane to reach high altitude, and measured his responses there. He labeled this part of the study as case B. Now, John knows how he needs to prepare for a high altitude hiking. Would case A see higher or lower atmospheric pressure than case B?

A: higher

Problem: Two mycologists were studying fungi. Jim studied more about wood eating mushrooms and gourmet mushrooms, while George decided to study more about mycorrhiza, and its benefits for humans. Which mycologist learned more about a symbiotic association between a fungus and the roots of a plant?

A: George

Problem: Two related native tribes live thousands of miles away from each other. Ana tribe lives near the South Pole in Antarctica, while Momu tribe lives in Northern Alaska near the North Pole. Which tribe was more exposed to an increased risk of skin cancers?

A: Ana

Problem: Pete lived in Alaska, but visited his friend Julia from Hawaii very often. They had many mutual interests, including geology and earthquakes. Which person lived closer to Kauai island?

A:
Julia