Answer :
Answer:
All of the above.
Explanation:
- Fossil fuels are the fuels that are generated from the remains of extinct animals.
- They are the main source of energy nowadays.
- They are starting to becoming so used up that at the present rate, we will run out of them in about 250 years.
- Burning them releases large amounts of carbon dioxide into the atmosphere that results in global warming.
- Fossil fuels account for only 40 percent of the electricity generated in the US.
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Hope this helped!