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Which one of the following pairs of gases are the major cause of 'Greenhouse effect'?

1. CO2 and O3
2. CO2 and CO
3. CFCs and SO2
4. CO2 and N2O

Correct answer: CO2 and N2O

Solution

The major greenhouse gases include carbon dioxide (CO2) and nitrous oxide (N2O) due to their significant roles in trapping heat in the Earth's atmosphere, contributing to global warming.

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