Air Pollution Air Pollution CFish Mr. Nollen Biology 2B 8 May, 1996 The Problem Contamination of the atmosphere by gaseous, liquid, or rock-steady wastes or by-products that can endanger human wellness and the health and welfare of plants and animals, or can attack materials, reduce visibility, or produce undesirable odors. Among air pollutants emitted by natural sources, exclusively the radioactive gas radon is recognized as a major health threat. A byproduct of the radioactive smoothen of uranium minerals in certain kinds of rock, radon seeps into the basements of homes built on these rocks. According to recent estimates by the U.S.
government, 20 percent of the homes in the U.S. harbor radon concentrations that are high enough to parade a risk of lung cancer. Each year industrially authorized countries generate billions of tons of pollutants. The level is usually given in terms of atmospheric concentrations or, for gases in terms of parts per million, that is, num...If you demand to get a full essay, order it on our website:
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