steep – adj. going up or down very quickly

spiral – n. a situation in which something continuously increases, decreases, or gets worse (usually singular)

meatpacking plant – n. a factory that processes animals that are made into meat products

retain – v. to keep (someone) in a position, job, etc.

attract – v. to cause (someone) to choose to do or be involved in something

geography – n. the natural features (such as rivers, mountains, etc.) of a place

dense – adj. crowded with people
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