Which best describes the main sources of energy in the united states?
a. wind, nuclear, natural gas
b. solar, wind, hydroelectric
c. geothermal, biomass, solar
d. coal, oil, natural gas

D

Explanation:

Most of the energy in the United States comes from the burning of fossil fuels (coal, oil, natural gas). Hope this helps!

D. Coal,oil,natural gas

Explanation:

The main sources of energy in USA are non renewable sources of energy like coal, oil and natural gas. Oil is the main source of energy in USA while coal stands second as a source of energy. Apart from these two, natural gas is also widely used  in USA as an energy source. Non renewable sources of energy are also known as conventional sources of energy. Alternate sources of energy which are also known as renewable sources of energy like wind, solar hydroelectric, geothermal energy etc. are not used commonly as main sources of energy in USA.

answer: national resource conservation services

national resource conservation services is the us. based approach that provides technical and financial assistance for natural resource management. nrcs society in conservation of resources by involving in activities like farmland protection, flood prevention, watershed protection, urban conservation, conserves economic and environmental conditions. it conducts soil surveys and implements the policy of natural resources management on the society.