"One of the most sinister features of DDT and related chemicals is the way they are passed on from one organism to another through all the links of the s. For example, fields of are dusted with DDT; meal is later prepared from the alfalfa and fed to hens, the hens lay eggs which contain DDT. Or the hay, containing residues of 7 to 8 parts per million, may be fed to cows. The DDT will turn up in the milk in the amount of about 3 parts per million, but in butter made from this milk the concentration may run to 65 parts per million. Through such a process of transfer, what started out as a very small amount of DDT may end as a heavy concentration."
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Original Language: English
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Rachel Carson, (quote from pp. 22–23) Silent Spring, 1st edition, 1962
https://en.wikiquote.org/wiki/DDT
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DDT
is an , first synthesized in 1874 by . In 1939 discovered that DDT is an effective . In WW II, from 1943 to 1945, DDT was used to kill mosquitos and lice to effectively limit the spread of and . In the 1950s and 1960s, DDT was widely used to control insects. However, DDT is a — harmful to birds and mammals and readily by s and s. During the 1970s and 1980s, many countries banned the agricultural use of DDT.
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