Question

Which gas is most responsible for global warming?

• A. Oxygen
• B. Carbon dioxide
• C. Nitrogen
• D. Hydrogen

Hint:

Carbon dioxide is the leading cause of global warming due to its ability to trap heat in the atmosphere.

Answer 1

The Correct Option is B

Carbon dioxide (CO₂) is the most responsible gas for global warming. It is a greenhouse gas that traps heat in the Earth's atmosphere, contributing to the rise in global temperatures. Step 1: Analyzing each option.

• (A) Oxygen: Incorrect. Oxygen is essential for life but does not contribute significantly to global warming.
• (B) Carbon dioxide: Correct. Carbon dioxide is the main greenhouse gas contributing to global warming.
• (C) Nitrogen: Incorrect. Nitrogen makes up a large part of Earth's atmosphere but is not a greenhouse gas.
• (D) Hydrogen: Incorrect. While hydrogen is an important element, it does not contribute to global warming.

Step 2: Conclusion.
Thus, the correct answer is (B), Carbon dioxide. Final Answer:} Carbon dioxide.