In this task, you are given a question and answer for that. The answer will fill in the blank or will complete the unfinished question. Your task is to provide an explanation based on the given question or fill-in-the-blank statement, and answer.

[EX Q]: Question: Mike is digging for old rocks. Mike dig downs very, very shallow, and he expects the rocks there to be 
 Answer: younger
[EX A]: Therefore, deeper rock layers must be older than layers closer to the surface.

[EX Q]: Question: Sarah is traveling, and notices that continents get larger when they are where in relation to the pole 
 Answer: closer
[EX A]: In a Mercator projection, because Greenland is closer to the pole, the continents shape and size are greatly increased.

[EX Q]: Question: Amy is from the Hawaii, where she used very little fossil fuels. Andy is from a poor country where they use lots of fossil fuels. The person who's country will contribute more to air pollution is 
 Answer: Andy's
[EX A]:
Because richer nations use more fossil fuels, they also cause more air pollution and global warming than poorer nations do.