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carbon is an element, so "carbon" can't exist of anything.

But the carbon found in fossil fuels are mostly from shells and dead animals or plants, after being exposed to imense heat and presure by stacking layers of sediment, plants and shells

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Q: What does most of the carbon in fossil fuels exist of?
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Related questions

What is the common atom in fossil fuel?

Carbon Most common in all fossil fuels is carbon. In natural gas, both hydrogen and carbon are common.


When fossil fuels burned what happened?

When fossil fuels are burned, carbon dioxide is released into the environment. This can influence the greenhouse effect and increase global warming. Coal is the fossil fuel that produces the most carbon dioxide emission.


What cycle is most affected when burning of fossil fuels by cars and factories?

Carbon


Which gas released from the burning of fossil fuels is the gas that contributes to global warming?

The gas released from the burning of fossil fuels that contributes to global warming is carbon dioxide (CO2).


What happened when fossils fuels are burned?

When fossil fuels are burned, carbon dioxide is released into the environment. This can influence the greenhouse effect and increase global warming. Coal is the fossil fuel that produces the most carbon dioxide emission.


Most of the excessive carbon dioxide that is expected to cause global warming is generated by what?

burning of fossil fuels


What form of man made energy releases the most carbon dioxide into the atmosphere?

Burning fossil fuels.


Most air pollution is a result of?

Carbon dioxide being given off when we burn fossil fuels.


What is the source of the most of the carbon?

The most important source of carbon entering atmosphere is industries. Living things, burning fossil fuels and automobiles are other sources of carbon dioxide.


What sources of energy are most damaging to the environment?

Fossil fuels.


How can roller coasters use fossil fuels?

Most, if not all, roller coasters are powered by electricity. Most electricity is still being generated by burning of fossil fuels (coal, oil and natural gas). As this burning emits carbon dioxide you can clearly say that roller coasters are contributing to global warming by using fossil fuels.


What electricity generation harms the environment the most?

Burning coal to generate electricity releases the most carbon dioxide of the fossil fuels.