D. Write TRUE if correct and FALSE if not. 16. When we use the hair dryer, the energy is transformed, from mechanical to electrical_____ 17. The sun is a natural source of heat and light energy____ 18. Wind energy is harnessed in a windmill, that helps the turbine to produce electricity.____ 19. Electricity produced in turbine of a dam, has undergone mechanical, electrical, to heat, light and sound when already used in our houses,____ 20. Can it be true in the human body, when the chemical energy stored from food we eat, be transformed to kinetic, when we sing and dance ?____