3.Anthropogenic.chemicals.11

3.Anthropogenic.chemicals.11 - Types and Sources of...

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Unformatted text preview: Types and Sources of Anthropogenic Chemicals Introduction Pesticides Metals Industrial Chemicals Drugs and Pharmaceuticals Summary and Conclusions I. Introduction Anthropogenic chemicals are those made or released by humans. In 2000 BC, Romans used criminals in Spanish mercury mines because they only lived about 3 years. Both ancient Romans and Egyptians used lead, may have contributed to widespread lead poisoning. Lead is easy to work with, malleable, used for dishes and pipes Ancient Greek historian Strabo noticed that arsenic miners lived relatively short lives. II. Pesticides Any substance used to prevent, destroy, repel or mitigate any pest. A pest is any harmful, destructive, or nuisance organism. They have been used as a part of chemical warfare since the beginning of time. They include insecticides, herbicides, fungicides, rodenticides, nematicides, miticides, etc. Generally listed according to the thing they kill Why Use Pesticides? In 1830, 58 hours of manpower were needed to produce an acre of grain in the US today it only takes 2 hours. In the 1800s, 98% of the US population worked on farms....
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3.Anthropogenic.chemicals.11 - Types and Sources of...

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