RadiationConvectionConduction
1.by conduction through dense matter.(solids)2.by convection through less dense matter (liquids/gas)3.by radiation through vacuum
The pat answer is conduction, convection and radiation. A link is provided below that explains each one. It's in the Wikipedia post on heat transfer, a pillar of thermodynamics. well the 1 of the 3...
Radiation, conduction, and convection.
conduction,convection and radiation