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Pollution of Earth's Atmosphere

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Physical Science II
Lab Exercise 10
Pollution of Earth’s Atmosphere

Earth’s atmosphere is a dynamic, complex, yet fragile system. Unfortunately it is not treated as such. Pollutants created in the environment by natural processes and humans have a negative impact on our world. Pollution is not a new concept that just became popular in this century. Over hundreds of years, people have taken notice of pollution and its effect on the quality of life. One of the biggest events being the industrial revolution back in the 1700s, which helped spread pollution around the globe.

“Natural processes impacting our atmosphere include volcanoes, biological decay, and dust storms. Plants, trees, and grass release volatile organic compounds such as methane, into the air”. Humans contribute man-made pollutants into the air such as carbon monoxide, sulfur dioxide, and nitrogen oxides. “We are more concerned with human-made pollutants since we have the ability to control it. The largest source of human-made pollution is the burning of fossil fuels, including coal, oil, and gas, in our homes, factories, and cars”. As these pollutants are released in the atmosphere, they mix with moisture in the air to form acids. It then falls back to earth in the form of rain, referred to as acid rain. Rain is necessary to all living things in our world, but when it becomes acid rain the effects are damaging to so many parts of the environment such as soil, water supplies, plants, animals, humans, and even buildings. It impacts the food chain of animals and humans.

Scientists today have so much information and technology that identifies the impact pollution has on our planet. It is up to us to use this information to make the necessary changes, such as cleaning up smokestacks, exhaust pipes, and most importantly using alternative energy sources.

Sources:

Windows to the Universe team. Air Pollution. Boulder, CO: © 2010 National Earth Science Teachers Association, May 13, 2011. Online. Available: http://www.windows2universe.org. April 6, 2012.

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