Mike is studying the population growth rate of countries around the world. He noticed that countries like Japan and Russia are having a demographic shift. They have a growing population of late adulthood. He recorded the late adulthood population as population A. On the other hand, many developing countries have growing population of younger people. He recorded younger population as population B. Which population would see weaker immune system, population A or population B?
Ans: population A

Two friends had a sleepover. They spent most of the time online looking up stuff and talking about it. Bill looked up the Gaia hypothesis, while Frank read about the Flat Earth theory. Which friend read more about the composition of our atmosphere?
Ans: Bill

Thanks to environmental initiatives, Quebec has grown a large number of forests recently that are densely populated with tall trees. At the same time, Ottawa has been cutting down large numbers of trees in their forests and clearing the land to make room for housing developments and new construction sites. Which city, Quebec or Ottawa, has released less carbon dioxide through their actions?
Ans: Quebec

Two friends ate lots of deviled eggs for Easter this year. Danny felt sick and went to the doctor where he found out he had been infected with hepatitis B. Paul was ok and didn't require medical attention. Which friend didn't catch a disease of the liver?
Ans: Paul