Respuesta :
The correct answer is coal.
When were fossil fuels first used?
It was in the 1880s when coal was first used to generate electricity for homes and factories.
What are fossil fuels examples?
These fuels are found in the Earth's crust and contain carbon and hydrogen, which can be burned for energy. Coal, oil, and natural gas are examples of fossil fuels. Coal is a material usually found in sedimentary rock deposits where rock and dead plant and animal matter are piled up in layers.
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