Explanation:

? Many international conventions have a bearing on Climate and Air Quality

? Vienna Convention for the Protection of the Ozone Layer, 1985 - Vienna Convention (1985) was negotiated in order to protect environment and thus human health against detrimental effects of human activity which change or could change the ozone layer. Hence, option 1 is correct.

? The Convention on the Conservation of Migratory Species of Wild Animals (Bonn Convention or CMS) was adopted in Bonn, Germany in 1979 and came into force in 1985. Contracting Parties work together to conserve migratory species and their habitats by providing strict protection for endangered migratory species (listed in Appendix I of the Convention), concluding multilateral Agreements for the conservation and management of migratory species which require or would benefit from international cooperation (listed in Appendix II), and by undertaking cooperative research activities.

? World Heritage Convention is responsible for listing of World Heritage Sites, which include both Cultural and natural sites. The World Heritage Convention is a Convention under the aegis of the United Nations Educational, Scientific and Cultural Organization (UNESCO). Hence, options 2 and 3 are not correct.