I think that pollution is a serious and growing problem throughout the world today. Pollution is the contamination of the earth's environment with materials that interfere with human health, the quality of life, and natural functioning of living things and their surroundings. Although some environmental pollution is a result of natural causes, most of it is caused by human activities; therefore I believe that humans have created a problem which should be taken care of before other things.
There are two main categories of polluting materials, or pollutants, biodegradable and nondegradable. Biodegradable pollutants are mate
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