Answer:
China consume most primary energy in the World. USA rank 2nd in consumption of energy
D. When you start a job they usually put you to shadow someone so you can learn.
The source has chemical and potential energy which when switched on transforms into a chemical reaction. Potential energy is stored energy. A wire which is part of a circuit carries the electrical energy to the bulb which is a form of light energy. This completes the transformation of potential energy - chemical energy - electrical energy - light energy.
