Petroleum Is A Non Renewable Source Of Energy

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Our modern society relies on cars as its main form of transportation, but the Earth’s supplies of petrol are becoming increasingly limited. There are concerns about the greenhouse gases and other gaseous contaminants emitted by cars. This has created a search for environmentally friendly alternatives.
Petroleum is a fossil fuel that was formed by ancient marine organisms and decomposing trees. It is a complex mixture of organic liquids called crude oils and natural gases; petrol occurs naturally in the ground and was formed millions of years ago. (National Geographic Society, 1996) The crude oils and natural gases are extracted by giant drilling machines. Petrol, like coal is a non-renewable source of energy. Non-renewable energy can’t be re-generated within a short span of time and isn’t environmentally friendly as when it is burnt it emits greenhouse gases. The crude oils and natural gases have taken millions of years to form and when it is extracted and used there is no way to replace it. When petrol is burned, it releases toxic gases and high amounts of carbon dioxide. Carbon helps regulate the Earth’s atmospheric temperature, but burning fossil fuels affect our climate and cause global warming.
Ethanol is now used as a fuel for vehicles in its pure form as a replacement for petrol, where it is blended with petrol to improve the vehicles emissions and power. The substitution of ethanol for petrol in cars and light vehicles in Brazil is one of the largest commercial
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