tailieunhanh - SECOND EDITION Toxicology and Environmental Hazards HUMAN HEALTH Ecosystems

There is a commonly held myth in our society that anything that is “natural” is good, wholesome, and healthful, whereas anything that is “synthetic” is bad, toxic, and harmful. The mere mention of the word chemical is enough to strike terror into the heart of any food faddist. This attitude is, at best, naïve and, at worst, dangerous. Toxic substances abound in nature, ranging from inorganic heavy metals such as arsenic and mercury, through organic substances such as hydrocyanic acid, to complex enzymes and other proteins of the neurotoxins and coagulant-anticoagulants present in venoms and toxins. One of the more serious environmental hazards may be natural radon gas, and cancer from. | SECOND EDITION Ecosystems and HUM AN HEALTH Toxicology and En RICHARD B. PHILP SECOND EDITION Ecosystems _ _ 1 and. HUMAN HEALTH Toxicology and Environmental .

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