when scientists examine the gases ejected during a volcanic eruption, the majority of the gas is water vapor. how does the process of subduction provide a water source for volcanic gases?

radiative zone

explanation    

radiative zone is the layer of the sun which energy is transferred away from the core by radiation. although, the core is the only part of the sun that produces an appreciable amount of heat through fusion. in fact, 99% of the energy produced by the sun takes place within 24% of the sun's radius.