Of the Following Greenhouse Gases, Which Have Actually Decreased in Atmospheric

question 10

Multiple Choice

Of the following greenhouse gases, which have actually decreased in atmospheric concentrations during the past 30 years?

• A) methane (CH₄)
• B) carbon dioxide (CO₂)
• C) chlorofluorocarbons (CFCs)
• D) nitrous oxides (N₂O)

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Definitions:

United States

A federal republic in North America comprising 50 states, known for its significant influence in global economic, political, and cultural matters.

Twenty Million

The numerical figure 20,000,000.

Paralegals

Trained legal assistants who work under the supervision of attorneys, performing tasks like legal research, document preparation, and client interviews.

Businessmen

Individuals engaged in commercial or industrial business activities, often with decision-making power and ownership stakes.