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Coal is the dirties nonrenewable energy source
Natural gas is a nonrenewable energy source.
Petroleum is a nonrenewable resource.
no, it is a renewable energy source.
For a while, yes. Long term, no. It is a non-renewable resource, and so we have to switch over to alternative energy sources.
Yes, coal is a nonrenewable source of energy.
all nonrenewable fuels can be traced back to the sun as a primary energy source
Fossil fuels.
Petroleum is cheaper.
nonrenewable sources of energy
yes
petroleum