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air

Title: air
Category: /Science & Technology
Details: Words: 1273 | Pages: 5 (approximately 235 words/page)
air
Air Pollution, contamination of the atmosphere by gaseous, liquid, or solid wastes or by-products that can endanger human health 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, only the radioactive gas radon is recognized as a major health threat. A byproduct of the radioactive decay of uranium minerals in certain kinds of rock, radon seeps into the …showed first 75 words of 1273 total…
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