In 1896, Samuel P. Langley wrote the following quote in response to the use of which of the following forms of energy? "The rivers are clean again, harbor shows only white sails, and England's 'black country' is green once more."

Question

In 1896, Samuel P. Langley wrote the following quote in response to the use of which of the following forms of energy? "The rivers are clean again, harbor shows only white sails, and England's 'black country' is green once more."
Responses

Wood
Wood

Coal
Coal

Nuclear energy
Nuclear energy

Petroleum

GPT 3.5 · Answer

Petroleum