Climate Scientists Have Been Concerned About the Effects of Greenhouse

question 20

Multiple Choice

Climate scientists have been concerned about the effects of greenhouse gases on the sustainability of the planet for more than __________.

• A) a decade
• B) two centuries
• C) 50 years
• D) 90 years

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Definitions:

Hyphenated Americans

Americans who identify their ethnicity or nationality with a hyphen, as in "Italian-American" to indicate their cultural heritage.

World War I

A global conflict that took place primarily in Europe from 1914 to 1918, involving many world powers.

Propaganda Campaign

A systematic effort to spread certain ideas or beliefs, often by a government or organization, to influence public opinion or behavior.

Treaty of Versailles

The peace treaty signed in 1919 that officially ended World War I between the Allied Powers and Germany, imposing heavy reparations and territorial losses on Germany.