A B С D https://science4fun.info/wp-content/uploads/2014/12/conduction-beat-transfer.jpg . Which of the following heat transfers is done in convection? A. Heat transfer through from substance to another by direct contact. B. When liquid or gas is heated, the molecules of the heated part move faster and away from each other. C. Heat can be transmitte across empty space. D. Heat was received by the sun.