SRL for [melt]: A substantial warming would [melt] some of the Earth 's polar ice caps , raising the level of the oceans and causing widespread flooding of heavily populated coastal areas .
ARG-0: A substantial warming | ARG-M-MOD: would | ARG-1: some of the Earth 's polar ice caps | ARG-M-ADV: raising the level of the oceans and causing widespread flooding of heavily populated coastal areas