Question: The researches studied the atmosphere in Antarctica, and close to Greenland. They found out there's an ozone hole over Antarctica.  Given the paragraph above, please answer correctly the following question:   Which landmass didn't have its atmosphere destroyed by bromine gasses?
Answer: Greenland

Question: Jacob has lived in a city in Sweden for most of his life. His favorite hobbies are reading and playing videogames so he rarely goes outside. Even as a kid, he almost never played outside and instead was in his house most of the time. Martin lives in the middle of the Sahara desert in a small town. The sun almost never stops beating down on Martin during the day and it's hard to find shade where he lives.  Given the paragraph above, please answer correctly the following question:   Is Jacob more or less likely than Martin to have a vitamin D deficiency?
Answer: less

Question: Alexiev and Sabrina were enthusiastic chemistry students completing the first experiment of their new course. They both started the experiment with pure water, and had to perform different experimental protocols to make changes to the water. At the end of the experiment, both of them measured the concentration of hydronium ions present in their reaction mixtures. Alexiev had a high concentration of hydronium ions present, while Sabrina had a low concentration present in her mixture.  Given the paragraph above, please answer correctly the following question:   Which person's mixture, Alexiev's or Sabrina's, has a higher pH value at the end?
Answer:
Sabrina's