Does does jupiter mars and saturn have hydrogen and helium in their atmosphere

Jupiter and saturn have hydrogen + helium. mars, like venus, their atmosphere have co2 + nitrogen

Because its reliable.   there is no pollution  the chances of a radiation leak is low

The radiation of the fire causes the saucepan to heat up. the conduction of the saucepan then to distribute the heat over the saucepan and to give heat to the water. the convection of the water distributing the heat within the water, till all the water is boiling