Global warming ; a growing problem that affects people, animals and the environment all over the world. What is it and what can we do to stop it?
What is global Warming?
Many scientists are still arguing that the causes of global warming are natural and not humans fault. Their main statement is that in the past the earth’s temperature has declined and risen. This happened even before humans inhabited the earth. Some argue that the rotation speed and axis of the earth can change, which affects the angle of sunlight that the sun sends to us, which can change the overall temperature of the earth. Some scientists think this is the main cause of global warming, but a great majority of them think that it is the humans fault for pumping the atmosphere full of green hose gases. Arguments still go on, but a large team of scientists from around the world was asked to look at all the data and draw a conclusion. In November 2007 they reported: “Most of the increase in global temperature since the mid-20th century is very likely due to the increase of greenhouse gases.” The scientists stated that they were about 90% sure, but there is still a possibility that global warming is caused naturally.
What are greenhouse gases?
In the world there are many gases that tribute to the greenhouse effect. The 4 major ones are Carbon Dioxide, Methane, Nitrous oxide and surprisingly water vapor. Carbon dioxide is probably the most common of all greenhouse gases. Carbon dioxide is also the gas that worries people the most. This is because carbon dioxide is produced in large amounts by humans. The main cause of carbon dioxide is burning fossil fuels such as coal, oil, and gas. We need fossil fuels to power our cars as they can be turned into petrol and diesel. A commonly known fact is that trees take in carbon dioxide and turn it into oxygen. This is true but, the numbers of square kilometers of forest is also declining rapidly due to heavy deforestation. In...
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