Superworms will eat just about anything you give them. Keep them in 1 to 4 inches of wheat bran, oats or a highly nutritious gutload. Make sure to gutload all food items for 24 hours prior to feeding your reptiles. Gutloading is feeding very nutritious/high quality foods to prey prior to feeding to your animals.
Temperature refers to how warm or cold air is, and the density of the air is how many molecules are packed into a certain space of air. Air pressure is influenced by temperature because as the air is warmed, the molecules start moving around more, so they bump into each other more often and create more pressure. But air pressure also affects temperature-the more those molecules bump into each other, the more heat they generate.
Varying the air pressure controls the air temperature since the warmed air from the engine bleed moves through the cabin towards the exit valves. Want it warmer, lower the pressure and warmer air fills the cabin. Keep the valves closed for a while and the aircraft cools pretty rapidly and the air does too. Doesn't take much change in pressure to move the air, a few feet of altitude will do it, but the change is what is needed to make the air move at all.