Which of the Following Statements About Greenhouse Gases Is Most

question 37

Multiple Choice

Which of the following statements about greenhouse gases is most accurate?

• A) Greenhouse gases have never been very stable, and have increased dramatically in the past 130 years.
• B) Greenhouse gases were fairly stable through most of human history, but have decreased dramatically in the past 130 years.
• C) Greenhouse gases have never been very stable, but have decreased dramatically in the past 130 years.
• D) Greenhouse gases were fairly stable through most of human history, but have increased dramatically in the past 130 years.
• E) Greenhouse gases increased steadily through most of human history, but have remained stable over the past 130 years.