Fossil fuels - because they were formed from remains of vegetation or algae over millions of years.
Coal, petroleum,and natural gas, are called fossil fuels because they were formed millions of years ago, during the Carboniferous period.
Because of their organic origin
Oil and natural gas are both "fossil" fuels.
Coal, Oil, and natural gas.
Fossil Fuels
The major fossil fuels are coal, oil, and natural gas.
Coal, petroleum,and natural gas, are called fossil fuels because they were formed millions of years ago, during the Carboniferous period.
Natural gas is a fossil fuel. Other fossil fuels do not "turn into" natural gas.
They are called fossil fuels.
natural gas,fossil fuels
Because of their organic origin
Oil and natural gas are fossil fuels.
The three main fossil fuels are coal, oil and natural gas
Alternatives fuels are fuels that are not made from fossil fuels (coal, oil and natural gas).
Natural Gas is a fossil fuel.
Oil and natural gas are both "fossil" fuels.
Fossil fuels (coal, oil and natural gas).