Environmental Science
One greenhouse gas contributes 14% to total global warming and another contributes 6%. These are respectively identified as

Methane and CO2
CFCs and CO2
N2O and CO2
CFCs and N2O
Methane and CFCs

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Environmental Science
What is UNCED?

United Nations Conference on Environmental Day
None of these
United Nations Conference on Education,
United Nations Conference on Environment and Development

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