Questions: Which of the following is a greenhouse gas? A. Ozone B. CFCS C. DDTs D. Carbon dioxide

Transcript text: Which of the following is a greenhouse gas? A. Ozone B. CFCS C. DDTs D. Carbon dioxide

Solution

Solution Steps

Step 1: Identify Greenhouse Gases

Greenhouse gases are those that trap heat in the atmosphere, contributing to the greenhouse effect. Common greenhouse gases include carbon dioxide (CO₂), methane (CH₄), nitrous oxide (N₂O), and ozone (O₃).

Step 2: Analyze the Options

Let's analyze each option to determine if it is a greenhouse gas:

A. Ozone: Ozone in the atmosphere acts as a greenhouse gas, particularly in the troposphere.
B. CFCS (Chlorofluorocarbons): These are synthetic compounds that contribute to the greenhouse effect and ozone depletion.
C. DDTs (Dichlorodiphenyltrichloroethane): This is a pesticide and not a greenhouse gas.
D. Carbon dioxide: This is a well-known greenhouse gas.

Step 3: Determine the Correct Answer

From the analysis, both ozone and carbon dioxide are greenhouse gases. However, the most commonly recognized greenhouse gas among the options is carbon dioxide.

Final Answer

\(\boxed{\text{D. Carbon dioxide}}\)

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