The United Nations Framework Convention on Climate Change (UNFCCC) is an international treaty drawn at
- (a)United Nations’ Conference on the Human Environment, Stockholm, 1972
- (b)UN Conference on Environment and Development, Rio de Janeiro, 1992
- (c)World Summit on Sustainable Development, Johannesburg, 2002
- (d)UN Climate Change Conference, Copenhagen, 2009
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Official answer(b) UN Conference on Environment and Development, Rio de Janeiro, 1992