Global Warming 2 Essay

647 words - 3 pages

Global Warming I have chosen to speak about Global warming because it is a major scientific issue in the media.Problems facing the environment today are vast and diverse. Destruction of the world's rain forests, the depletion of the ozone layer, air pollution, water pollution, chemical pollution and global warming are just some of the problems that will reach dangerous proportions in the coming decades.The three aspects of global warming I will discuss are: What is global warming? What are the effects of global warming? What are we doing to reduce global warming? Global warming is a greenhouse effect on the Earth. Solar energy is transmitted to earth by the sun. Excess energy should reradiate back into space through the earth's atmosphere. But, because of increased carbon dioxide and methane in the earth because of emissions from polluters such as factories and cars, excess energy is trapped in the earth's atmosphere and causes a warming of the earth called "Global Warming." Starting in the mid-1700s, human activities began to alter the composition of the atmosphere. Vast supplies of charcoal, and later coal and oil, fed the growing fires of the Industrial Revolution. The carbon stored in these fuels was released to the air as carbon dioxide - a gas that traps heat in the atmosphere. Today, for every one of the more than 5.8 billion people on Earth, nearly six tons of carbon dioxide is spewed into the air every year. As a result of our activities, the gas trapped inside the atmosphere has risen by more than 30 percent in the last 250 years. These greenhouse gases which prevent infrared radiation from escaping into space, keep the earth's temperature warm. According to the British Meteorological Office the earth is getting warmer each year - In fact 1995 was the warmest year on record.A lot of people say that a warmer earth is not such a bad thing: just look at the...

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