Which of the following is not a commercial source of energy?
Firewood
Coal, petroleum, and natural gas are all fossil fuels, extracted and processed for commercial use. They are bought and sold on energy markets. Firewood, on the other hand, is typically gathered or harvested for personal use or small-scale, non-commercial applications. While it can be a source of energy, it's not generally considered a commercial energy source in the same way as the others.
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Important Questions from General Science
Which is the heaviest metal among the following?
At hill stations, the boiling point of water will be
Energy travels from Sun to Earth through
Heat is transmitted from higher temperature to lower temperature through the actual motion of the molecules in
Helium is added to the oxygen supply of deep sea divers because it is __________
