Single correct option
Which of the following statements is/are correct?
1. The greenhouse effect is caused mainly by nitrogen and oxygen.
2. Global warming is expected to lower the sea level.
1. The greenhouse effect is caused mainly by nitrogen and oxygen.
2. Global warming is expected to lower the sea level.
- A. 1 only
- B. 2 only
- C. Both 1 and 2
- D. Neither 1 nor 2
Show answer and solution
Answer: (D) Neither 1 nor 2
The greenhouse effect is due to gases such as carbon dioxide, methane, water vapour and nitrous oxide; nitrogen and oxygen do not trap heat appreciably. Warming melts glaciers and expands sea water, so sea level rises, not falls. Both statements are wrong.
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