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Their insecticidal and insect-repellent properties have been known and used for thousands of years. Pyrethrins are gradually replacing organophosphates and organochlorides as the pesticides of choice as the latter compounds have been shown to have significant and persistent toxic effects to humans.
Insect repellents (or uncommonly insectifuges) repel insects but do not kill them. Therefore, they are not technically insecticides nor technically pesticides. This category contains articles on insect repellents that are not insecticides, meaning that their main purpose/function is not to kill but to repel. Articles here may relate to chemical ...
perhaps the greatest danger from D.D.T. is that its extensive use in farm areas is most likely to upset the natural balances, not only killing beneficial insects in great number but by bringing about the death of fish, birds, and other forms of wild life either by their feeding on insects killed by D.D.T. or directly by ingesting the poison.
One reason for the increasing interest in natural dyes is consumer concern over the possibility that some commercial synthetic red dyes and food colorings may be carcinogenic. [45] Being natural is not a guarantee of safety, [46] but studies show that cochineal is neither carcinogenic nor toxic. Cochineal does, however, have a slight potential ...
Sandfly or sand fly is a colloquial name for any species or genus of flying, biting, blood-sucking dipteran (fly) encountered in sandy areas. In the United States, sandfly may refer to certain horse flies that are also known as "greenheads" (family Tabanidae), or to members of the family Ceratopogonidae.
In 1993, about 350 documents were forged by Lawrence X. Cusack III. These papers were supposedly from, or related to, John F. Kennedy.Some of them alleged that Kennedy had a secret first marriage and dealings with organized crime, had bribed FBI director J. Edgar Hoover, and paid hush money to Marilyn Monroe.
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