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Global climate change. Greenhouses gasses that warm the earths surface are water vapor, carbon dioxide, and methane. When light from the sun reaches earth, it is reflected back into the earths atmosphere as infrared radiation.

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Introduction

Cesar Martinez Dr. Coburn Bio 1 T/TH October 26, 2009 Global Climate Change According to an article by the British Broadcast Corporation (BBC), the United States emits more greenhouses gases per person then any country in the world. Although greenhouse gases occur naturally in the earth's atmosphere, humans have rapidly increased the amount of carbon dioxide (CO2) in it. All the excess carbon dioxide has caused a gradual increase of the earth's temperature, which we call global warming. Scientists believe global warming is most likely caused by human. Although many people think global warming is not real, I believe global warming is the most important issue facing the world. The burning of fossil fuels and deforestation are the main causes for global warming. The effects of these could have a devastating effect on earth. Effects like the spread of disease, drought, extreme weather patterns, and even the extinction of animals. There are many changes we can make to combat global warming like using alternative fuel sources like nuclear, solar, and hydrogen. Greenhouses gasses that warm the earth's surface are water vapor, carbon dioxide, and methane. When light from the sun reaches earth, it is reflected back into the earth's atmosphere as infrared radiation. Once infrared radiation is reflected back into the atmosphere, greenhouse gases absorb the radiation and reflect it back to earth, thus causing what we know as the greenhouse effect. ...read more.

Middle

NASA has also observed a rapid melting rate of the polar ice caps. If current trends continue, this could have a catastrophic effect on the world. One of the main consequences this could have is the flooding of coastal communities due to rising sea levels. This could have a great impact on the United States because states like Louisianan, Texas, Florida, and North Carolina are susceptible to flooding. The melting of the icebergs will also affect food production. Warm weather will have a negative effect on farmers who rely on freezing temperatures to grow winter crops, like wheat. We are already seeing the effects of the melting icecaps, global seal levels have risen by an astonishing 4 inches in the past century. Sadly global warming has also had a profound effect on wildlife. If current trends continue many species will become endangered or even worse, extinct. Many animals do no hibernate the same amount of time they used to. Also many animals such as the polar bear, are not as healthy as they were a mere 20 years ago. Global warming has also caused some species to migrate toward colder climates, thus causing a heavier competition for food. The temperature change also causes some species to have more of a certain gender offspring, due to the warmer weather. Melting ice, rising sea levels, and drought are all causes of global warming and they are adversely impacting wildlife. ...read more.

Conclusion

Most experts predict that we will exhaust our supply of fossil fuels within a few hundred years, while it would take billions of years to exhaust our natural supply of uranium. Although the use of nuclear power has many advantages it also has many drawbacks. When nuclear fuel is recycled it creates a byproduct known as plutonium, which can be used be build nuclear weapons. Many lawmakers fear that allowing the recycling of uranium would make it extremely difficult to control the world supplies of plutonium, which if in the wrong hands could have a catastrophic consequence. In conclusion it is clear that global warming is a very important issue facing the world today. The fossil fuels we burn contribute heavily to the greenhouse gases we send into the earth's atmosphere, which in turn heats up the earth. Deforestation is another heavy contributor to global warming, mainly due to the slash and burn methods used by people around the world. All this has a profound effect on the world from the near extension of animals to the devastating weather patterns it creates. Global warming will also continue to increase negative the effect it has on humans, from flooding of coastal regions to the spread of disease caused by insects. Although the United States is the biggest emitter of greenhouse gases we have found many alternative fuel sources to combat global warming, such as nuclear, hydrogen and solar energy, as we hope to lessen our impact on the earth's climate. ?? ?? ?? ?? Martinez 1 ...read more.

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