Yes. "Sous-vide" is such a method and is already being used.
NO
no
the absence of air is "vacuum"
No of course not, because there will be no fire.
water,air,sunlight,correct temperature,food,absence of insects and poisons
Air from oil when you cook crispy food comes out of the food making it less crispy but when you put it in the air-tight containers , the air cannot escape so the crispy food remains crispy.
A Vacume
No hydrogen will not burn in the absence of air unless another oxidizer is present.
no, wind is the movement of air
A Vacuum is the absence of air. So no, there is no air in a vacuum.
ZnCO3, when heated in the absence of air, decomposes to give ZnO and CO2. I think this is the answer.
No, it would be convection: because the energy is circulating, due to heat differential (convecting), through the air.