Question: Lena is a grade school student studying the periodic table for homework. She has to choose two elements from the table and write a couple paragraphs about them and their characteristics. She takes two darts and throws them at the periodic table to decide which ones to use. The darts land on Zerpine and Dradane. Zerpine may be further down the table than Dradane, but they are both in the same column. Which element has more electron shielding?
Answer: Zerpine

Question: The researches studied the atmosphere in Antarctica, and close to Greenland. They found out there's an ozone hole over Antarctica. Which landmass didn't have its atmosphere destroyed by aerosol sprays?
Answer: Greenland

Question: Planet Y and planet X were two inhabited planets in a nearby solar system. People from Planet X were living in harmony with nature, and didn't hurt the environment in any way. People on planet Y generated lots of air pollution, and destroyed their ozone layer by using inappropriate substances. Which planet has fewer chlorine gases in their atmosphere?
Answer:
planet X