Thursday, October 28, 2010

Global Warming


A fact is that the earth has become involved in an increasing average temperature of his air and oceans since the mid-20th century. Several studies show that the global surface temperature increased more than 1.33°F in the last 50 years. Global warning has several effects in changes the natural and ecological systems, which are generated sometimes by the nature and for the human activities. Consequently with the effects of Global warming, some countries are taken steps to reduce his emissions signing the Kyoto Protocol.

The first effect consists in changes in the natural system, who consists in changes in the structure of the earth than we known`. The ice is melting around the worldwide, including mountain glaciers, ice sheets placed in west Antarctica and Greenland, and Arctic sea ice, who generate a rise in the sea level, and for that reason some islands and coasts zones are going to be under the water. Also, the increase in the temperature of the earth generated an increase in the level of the precipitation and Hurricanes and storms are likely to become stronger.

The second effect is about changes in the ecological system. With more CO2 in the air and more temperature in oceans and terrestrial surface, the timing of spring event are going to be early, affecting certain ecosystems, including tundra, mangroves and coral reefs. This is going to generate the extinction of many species who cannot adapt to the new environmental panorama. Thus, the world is going to reduce the diversity of ecosystems.

Global warnings are caused by Natural and for Human activities. In the first one, the Natural cause is created by nature. Here we have: release of methane gas from arctic tundra and wetlands, CO2 emissions from volcanic eruptions and forest fires generated for the nature. These gases are part of the greenhouses gas, which provoke the increase in the level of the temperature of the earth. Then we have most important cause of the global warning, human activities. Most of the economic and home activities in our life need energy to work. That energy is generated by burning fossil fuels, which generated the biggest problem that cause the global warning, the pollution. Because is formed by greenhouse gases as CO2 and Methane, who rising the temperature level. Other cause generated for the human is that the increasing in the level of population, because we need more food—more farms and less forest , more space of the earth to live and also with more people breathing more out CO2.

Some countries to prevent the expected causes of the global warming have taken the decision to sign the Kyoto Protocol, who began working since 2005. This protocol set a maximum emission Co2 rate, which can expel one country, but USA did not ratify the treaty and is one of the countries with more level of Co2 emission in the world.

In conclusion, the global warning is a huge problem that we have to face in the medium run, if we want future generations to know the word we saw. The global warning has several effects such as: change in the natural and ecological systems, who are generated for the emission for greenhouse gas, who are expelled for the own nature and the human activities. Some countries have been compromise to attack the global warning, signing the Kyoto protocol, which reduces the Co2 emission of a country can expel. Finally, if we want to help, use ecological products, public transportation, save electricity in your home, and the world would be a better place to live.

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