A. light and heat B. change into C. many kinds of D. make electricity E. save energy |
There are energy, including light, heat, electricity, and sound. One kind of energy can also another. For example, we use solar panels to change sunlight into electricity. We use energy in the wind to . Also, we can burn fuels to make . Energy is very useful. Some of them are not renewable （可再生的）. Let's live a low-carbon life to and protect the environment.
