Sunday, October 21, 2007

The pollution....!!!!


In these last years the climate of our planet is changing. Climate change refers to the variation in the Earth's global climate or in regional climates over time. It describes changes in the variability or average state of the atmosphere over time scales ranging from decades to millions of years. These changes can be caused by processes internal to the Earth, external forces or, more recently, human activities.
The major forms of pollution are: Air pollution, it is the release of chemicals and particulates into the atmosphere; water pollution, soil contamination, reactive contamination, noise pollution, thermal polution,etc.... its effects become harmful to human health.
Some of the more common soil contaminants are: chlorinated Hidrocarbons, heavy metal (rechargeable batteries, paint, aviation fuel and still in some countries); gasoline, zinc, arsenic and bemzene and other. Motor vehicle emissions are one of the leading causes of air pollution and China, United States, Russia, Mexico and Japan are the world leaders in air pollution emissions.

Weather is the day to day state of the atmosphere, and is a chaotic non linear dynamical system. On the other hand, climate the average state of weather is fairly stable and predictable. Climate includes the average temperature, amount of precipitation, days of sunlight, and other variables that might be measured at any given site. However, there are also changes within the Earth's environment that can affect the climate.
Among the main climatic changes we have:

- Glaciation
- Ocean variability

For this reason we need to take care of the planet and we have a better quality of life. Is important that we remember that the planet is only one.

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