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Answer:
a. Burning natural gas for energy results in fewer emissions of nearly all types of air pollutants and carbon dioxide (CO2) than burning coal or petroleum products to produce an equal amount of energy.
b. The Petroleum is called black gold because when the crude oil is extracted from the soil below, it is black in colour. Petroleum is very expensive like gold. ... But after the purification of black crude oil, it gives golden colour. So, this is another reason for its name.
c. The fossil fuels are coal, petroleum and natural gas. They can't be made in laboratory as it takes millions of years for these fuels to form gradually from buried and decaying organic material. Also, fossil fuels need high pressure and high temperature to form which cannot be produced in a lab.
Explanation:
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Answer:
One reason natural gas is called“clean” is because it emits 50 percent less carbon dioxide than coal when you burn it. ... It is called clean fuel because it burn easily . it is smokeless and cause no air pollution it leaves no solid residue on burning.