Which of the following Summit/Convention is known to be the first to aim at 20 percent cut in the emission of CO2 by 2005 AD but the developed countries backed out from the agreement on the pretext of non-availability of reliable data of emission of GHGs?
1
World Climate Summit (Geneva), 1979
2
Rio Summit (Brazil), 1992
3
Toronto Summit (Canada), 1988
4
Vienna Convention (Austria), 1985