Today, however, major changes are taking place. People are conducting an inadvertent global experiment by changing the face of the entire planet. We are destroying the ozone layer, which allows life to exist on the Earth¡¦s surface. All of these activities are unfavorably altering the composition of the biosphere and the Earth¡¦s heat balance. If we do not slow down our use of fossil fuels and stop destroying, the forests, the world could become hotter than it has been in the past million years. Average global temperatures have risen 1 degree Fahrenheit over the last century. If carb

Life could not exist if there was no natural greenhouse effect. The reason for the natural greenhouse effect is so that all the creatures living on Earth can live and breathe. We as inhabitants of this Earth must do our part in preserving it, or there won¡¦t be much left for our children to live on. Human activities are causing some greenhouse gases such as carbon dioxide to build up in the atmosphere. Each time we burn gasoline, oil, coal, or even natural gas, more carbon dioxide is added to the atmosphere. By cutting down the forests trees, we allow air pollution to set in. This, therefore, causes many problems in addition to many others. Now that there are no trees to help filter out pollution, we are allowing more damage to the atmosphere causing global warming. There certain gases that occur naturally in the atmosphere tend to trap the sun¡¦s heat, which is called global warming. By trapping in the sun¡¦s heat, the Earth can be warmed up. Many of the Earth¡¦s natural disasters, such as volcanic activity, and other factors, have caused our planet¡¦s atmosphere to become either colder or warmer. The global average temperature of the surface has increased by one degree Fahrenheit over the past century. This indicates that this warming trend is due to human influences.

The warning will be the greatest at the higher latitudes of the Northern Hemisphere, with the largest temperature rises occurring in winter. Most areas will experience summertime highs well above 100 degrees Fahrenheit. New temperature records will be set each year.

If the present melting continues, the sea c

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