<span>Cultural Destruction.
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Answer:
There are 37 time zones in place today
Thank you for posting your question here at brainly. Below are the choices that can be found elsewhere. The answer is A.
<span>A.
Airports in the early 1920s catered to municipal and regional travel, while airports in the 1930s served as hubs for travel between countries.
B.
Airports in the early 1920s had larger runways and airport space, while airports of the 1930s had smaller, more efficient layouts.
C.
Airports in the early 1920s catered to travel between countries, while airports in the 1930s served as hubs for regional and municipal travel.
D.
Airports in the early 1920s were located in West Coast cities, while airports in the 1930s were located in East Coast cities. </span>
Answer:
Maritime tropical air masses originate over the warm waters of the tropics and Gulf of Mexico, where heat and moisture are transferred to the overlying air from the waters below. The northward movement of tropical air masses moves warm moist air into the United States, increasing the chances for precipitation.
