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Which gases are the most significant contributors to the greenhouse effect, with the highest relative impact?

1. Carbon dioxide (CO2) and methane (CH4)
2. Nitrogen and oxygen
3. Argon and neon
4. Hydrogen and helium

Correct answer: Carbon dioxide (CO2) and methane (CH4)

Solution

Carbon dioxide (CO2) and methane (CH4) are the primary contributors to the greenhouse effect due to their high concentrations and significant heat-trapping abilities in the atmosphere.

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