What is Rio+20 Conference, of ten mentioned in the news? (a) It is the United Nations Conference on Sustainable Development
What is Rio+20 Conference, of ten mentioned in the news?
(a) It is the United Nations Conference on Sustainable Development
(b) It is a Ministerial Meeting of the World Trade Organization
(c) It is a Conference of the Inter-governmental Panel on Climate Change
(d) It is a Conference of the Member Countries of the Convention on Biological Diversity
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