A 2014 Reuters analysis found that, before 1971, water reached flood levels no more than five days every year (on average) in several U.S. east coast cities. Since 2001, however, that number has risen to 20 days or more (on average).
It is a lot like the Northern states with having snow every year, but they are different because most of Northern Canada is in the Arctic Circle.
Answer:
D. The melting pot concept. America is often called a melting pot. Some countries are made of people who are almost all the same in terms of race, religion, and culture.Anywhere diverse people are assimilated could be called a melting pot.
Explanation:
It would be air temperature.