Table 7a-1: Average composition of the atmosphere up to an

Table 7a-1: Average composition of the atmosphere up to an altitude of 251 m Gas Name Chemical Formula Percent Volume Nitrogen N2 78.08 % Oxygen O 2 20.95 % WWater H 2 O {0 ~ t o ~) 4 % Argon Ar {0 . 9 3 %) *arbon Dioxide CO 2 {0 . 0 3 6 0 %) Neon Ne {0 . 0 0 1 8 %) Felium He {0 . 0 0 0 5 %) HMethane CH 4 {0 . 0 0 0 1 7 %) Nydrogen H 2 {0 . 0 0 0 0 5 %) * Ozone N 2 {O) 3.00003 % * varinble gases Berdasarkan table di atas, gas utama pemicu pemanasan global adalah ....