List and describe nonrenewable energy sources. List and describe renewable energy sources. Nouns are one of the eight parts of speech used in simple sentences. Nouns are words that name a person, place, thing, or idea. Later you will be asked to identify these nouns by type.
Sources of energy are either renewable or nonrenewable.
Nonrenewable fuels include gas, oil, and coal . These fuels are sometimes called fossil fuels . Americans have been using fossil fuels for energy for several centuries . Soon the reserves of these fuels will run out. Renewable sources of energy will have to be found to meet our energy needs .