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Coal, oil, and natural gas are formed from dead animals and plants over millions of years. As the world's reserves are burnt, there is no new source to compensate, so eventually all will be consumed. Until the advent of fracking, it was assumed the Earth had 20-50 years of oil reserves left. Peak coal is expected near 2025. Natural gas is expected to peak near 2050.

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10y ago
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12y ago

It takes millions of years for them to reform from the bodies of dead animals

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14y ago

They are non-renewable because when we burn them, they are finished.

A renewable source of energy, like sunlight, keeps coming back. We don't make it any less powerful by using it.

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13y ago

Because they cannot be replenished in our life time.

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10y ago

Because it takes thousands to millions of years for coal to form.

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11y ago

because they can not be created again.

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Q: Why are coal and petroleum considered non renewable sources of energy?
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Related questions

What sources of energy is not renewable petroleum biomass hydropower solarpower?

Petroleum


What are the different types of non-renewable energy?

- Fossil fuel energy sources (coal-natural gas - petroleum - wood) - Nuclear energy sources (fission - fusion). Nuclear energy may be considered as renewable energy source.


Which sources of energy is not renewable petroleum or hydropower or biomass or solar power?

petroleum


Which of the following sources energy is not renewable?

Petroleum


Is Petroleum a RenewableEnergy or a Nonrenable Energy?

Petroleum is considered a non-renewable energy because it is a fossil fuel.


Is petroleum energy is renewable energy?

Alas No. Petroleum Is Not A Renewable Energy Source. This Is Because The Amount Of Petroleum Can Finish, And It Takes Billions Of Years To Be Made. So Since The Amount Could Finish, It Is Considered As Non-Renewable. I Hope This Helps!


How are renewable and nonrenewable energy alike?

Renewable energy sources use various non petroleum, non wood, non peat, non nuclear sources for fuel energy, typically to produce electricity. Petroleum, wood, peat, and nuclear energy are non renewable sources because they can be depleted faster than they can be replaced. The main way these energy sources are alike is they are all used to produce electricity.


Is petroleum a renewable or nonrenewable?

For a while, yes. Long term, no. It is a non-renewable resource, and so we have to switch over to alternative energy sources.


What are all the non renewable energy sources?

coal, oil, gas, gold, petroleum and iron


What are 4 nonrenewable resources?

Oil and petroleum productsNatural gasUraniumCoalAll of the above are energy sources in which only a finite amount of fuel exists. These are considered to be non-renewable resources.


Which energy sources originate from a nonrenewable resource?

Much of the energy we use nowadays (as of 2016) is from the so-called non-renewable sources - mainly coal, and petroleum.


Which is not a renewable energy source?

petroleum