How is density related to molecules in your body/cells? Please don't look up an answer because I can get in trouble. Explain what ur saying as if you was explaining to ur little sister.

Which of these describes how heat is transferred by convection* a. sunlight travels through space without the aid of fluids or solids. b. warm air rises and takes the heat with it, eventually, it cools and sinks c. air at the equator rises and sinks at the poles. d. air molecules touch the warm ground, heating them up *not conduction