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Changing regional limited could alter forests, crop yields, and water supplies. It could also threaten human health, and harm birds, fish, and many types Of ecosystems. Deserts may expand into existing rangelands, and the character of some of our National Parks may be permanently altered. Most of the United States is expected to warm, although sulfates may limit warming in some areas. Scientists currently are unable to determine which parts of the United States will become wetter or drier, but there is likely to be an overall trend toward increased precipitation and evaporation, more intense rainstorms, and drier oils.

Unfortunately, many of the potentially most important impacts depend upon whether rainfall increases or decreases, which can not be reliably projected for specific areas. Throughout the world, the prevalence of particular diseases and other threats to human health depend largely on local climate. Extreme temperatures can directly cause the loss of life. Moreover, several serious diseases only appear in warm areas. Finally, warm temperatures can increase air and water pollution, which in turn harm human health. The most direct effect of climate change would be the impacts f hotter temperatures themselves.

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Extremely hot temperatures increase the number of people who die on a given day for many reasons: People with heart problems are vulnerable because one’s cardiovascular system must work harder to keep the body cool during hot weather. Heat exhaustion and some respiratory problems increase. Higher air temperatures also increase the concentration of ozone at ground level. The natural layer of ozone in the upper atmosphere blocks harmful ultraviolet radiation from reaching the earth’s surface; but in the lower atmosphere, ozone is a harmful pollutant.

Ozone damages lung tissue, and causes particular problems for people with asthma and other lung diseases. Even modest exposure to ozone can cause healthy individuals to experience chest pains, nausea, and pulmonary congestion. In much of the nation, a warming of four degrees (F) could increase ozone concentrations by about 5 percent. Statistics on mortality¶y’ and hospital admissions show that death rates increase during extremely hot days, particularly among very old and very young people living in cities.

In July 1995, a heat wave killed more than 700 people in the Chicago area alone. Studies based on these types of statistics estimate that in Atlanta, for example, even a warming of about two degrees (F) would increase heat- related deaths from 78 today to anywhere from 96 to 247 people per year. If people are able to install air conditioning and otherwise acclimatize themselves to the hotter temperatures, the lower estimate is more likely. Global warming may also increase the risk of some infectious diseases, particularly those diseases that are spread by mosquitoes.

Acid Rain goes hand in hand with global warming. Acid rain is a great problem in our world. It causes fish and plants to die in our waters. Acid rain is a common term for pollution caused when sulfur and nitrogen dioxides combine with atmospheric moisture to produce a rain, snow, or hail of sulfuric and nitric acids. Such pollution may also be suspended in a fog, or the pollutants may be deposited in dry form. It causes harm to our own race as well because we eat these fish, drink this water and, eat these plants.

About 20 years ago scientists first believed that acid rain was due to entirely air pollution. They were partially right. Since the beginning of the Industrial Revolution in England, pollution had been affecting all the trees, soil and rivers in Europe and North America. The use of fossil fuels, such as coal and oil, are largely to be blamed for almost half of the emissions of sulfur dioxide in the world. However, there is another cause. The other cause is naturally occurring sulfur dioxide.

Natural sources which release this gas are volcanoes, sea spray, rotting vegetation and plankton. The EPA {Environmental Protection Agency} has an acid rain program. This program is working to significantly reduce utilities’ emissions of sulfur dioxide and tutoring oxides, the pollutants responsible for acid deposition. Across Europe there is a project going on in the schools, whose main goal is to educate young people about the changing nature of acid rain and the response of environmental systems to these changes, called “Acid Rain 2000”.

Schools are being invited to join the project from across continental Europe as well as the I-J. Already the project has participants in Norway, Sweden, Finland, Poland and Denmark. People can get more involved with wanting to solve this problem by becoming more aware of acid rain and spreading awareness as well. Awareness should start in the schools. Students should be given the right perspective about acidic rain. Some people are under the impression that acidic lakes are grimy and gross, when really they have a captivating beauty.

Granted the reason the lakes are so clear and beautiful are for the wrong reasons, people should know what to look out for. Students should be taught to conserve fossil fuels at a very young age, for the fossil fuels will be gone one day. When conserving the fossil fuels, the students will also be limiting the amount of sulfur emitted into the air, which in turn senses the amount Of acidity in the rain. It will take a lot Of time to end this problem.

Even if we were to stop polluting today we would have this environmental problem for years to come because of the build up we have left behind. If all goes well and people put their all into solving this problem, maybe it won’t be a problem in 50 years to come. After all, acid rain is an international problem and any study into its impact and the response of environmental systems must be international in approach. Prior to taking environmental science did not have an opinion on this matter. I always knew that pollution is bad, but I never realized how serious this issue really is.

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