Non-renewable resource

Non-renewable resource (called also non-renewable energies) are energy sources that tend to run out over time and therefore the environmental impact associated with their exploitation is generally more significant than that of renewable energy sources, which are instead reintegrated naturally in a relatively short period.

Non-renewable energy sources are often exploited by humanity because they can produce the highest amounts of energy with technologically simple and tested systems. Often, the use of such sources is associated with environmental pollution problems such as the production of greenhouse gases or radioactive waste. The four major nonrenewable energy sources are:

  • Crude oil (petroleum)
  • Natural gas
  • Coal
  • Uranium or plutonium (nuclear energy)

All fossil fuels are nonrenewable, but not all nonrenewable energy sources are fossil fuels; coal, crude oil, and natural gas are all considered fossil fuels because they were formed from the buried remains of plants and animals that lived millions of years ago. Uranium ore, a solid, is mined and converted to a fuel used at nuclear power plants. Uranium is not a fossil fuel, but it is classified as a nonrenewable fuel.

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