Economic Fluctuations Have Been Common for at Least 200 Years

question 31

True/False

Economic fluctuations have been common for at least 200 years, but they have diminished in frequency and severity in the United States and many other countries, particularly in the last 25 years.

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Definitions:

CFCs

Chlorofluorocarbons, chemicals used in aerosols, refrigerants, and foam blowings that contribute to ozone layer depletion.

Upper Atmosphere

The part of the atmosphere that is above the troposphere, including the stratosphere, mesosphere, thermosphere, and exosphere, which plays a critical role in atmospheric dynamics and chemistry.

Biodiversity

Of a region, the genetic variation within species, variety of species, and variety of ecosystems.