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Category: Science and Technology

Date Submitted: 01/02/2011 06:32 AM

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Global Warming IS a serious threat

1. All serious scientists support the view that global warming is happening & caused by human activities. The scientists who don’t support this view, work for the industries which are causing global warming.

2. To understand global warming you must first understand the greenhouse effect. The greenhouse effect is a natural phenomenon. After the sun’s rays enter the Earth’s atmosphere, the earth absorbs most of it, while the rest is deflected back into space. Atmospheric gases, called greenhouse gases, absorb some of this energy. The energy trapped by these gases warms the planet’s surface, creating a greenhouse effect. However, as the amount of greenhouse gases increase, then so to does the amount of heat it traps. The result of this is global warming.

3. Atmospheric concentrations of greenhouse gases have increased dramatically since the start of the industrial revolution. Most scientists agree that the cause of this rise is human activity, in particular the burning of fossil fuels. As these gases increase, they trap more heat & the earth gets warmer.

4. As well as industrial activities, deforestation also causes global warming. Forests hold large amounts of carbon inside each tree. When these trees are burned, this is released into the atmosphere. Also the less trees there are in the world means that the planet cannot process carbon properly. As plants absorb carbon inside their structures. The result of this is that carbon is building up quickly in the earth’s atmosphere.

5. It is a fact that both the atmospheric & ocean temperatures have risen in the last century. This will lead to sea level rise, spread of diseases (most diseases are happy in warm air), changing of climate patterns, loss of productive farming land etc.

6. Various climatic conditions have happened recently which provide proof that global warming is real:

a) the 14 hottest years the world has experience...