Non-commercial sources of energy are
A. wood, animal wastes and agriculture wastes
B. solar, wind and biomass
C. fossil fuels, hydropower and nuclear power
D. none of the above
Answer:A
Non-commercial sources of energy are
A. wood, animal wastes and agriculture wastes B. solar, wind and biomass C. fossil fuels, hydropower and nuclear power D. none of the above
Explanation: The sources of energy that are usually available free of cost from nature, are referred to as non-commercial sources of energy. For example, firewood, agriculture waste and dried dung.