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  • Publicado : 23 de febrero de 2011
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causa | efecto |
Pesticidas(The terms that are applied to the chemical agents used in the control plague) | 1- The extensive use of synthetic pesticides derived from the chlorinated hydrocarbonshas had collateral disastrous effects for the environment. These pesticides are very persistent and resistant to the biological degradation. Very slightly soluble in water, they stick fast to thefabrics of the plants and accumulate in the soils, at the back of the water currents and the reservoirs, and in the atmosphere. Once volatilized, they are distributed all over the world, contaminatingwild areas to great distance of the agricultural regions. * They are consumed by the herbivores or penetrate directly across the skin of aquatic organisms as the fish and diverse invertebrates, andcenter furthermore on having happened from the herbivores to the carnivorous ones. They interfere in the metabolism of the calcium of the birds, slimming the rinds of the eggs and spoiling hisreproduction. |
Use of group of compounds intimately linked to the DDT, the polychlorinated bifenilos (PCB) | 2- They have finished penetrating in the environment. Due to his extreme toxicity, PCB's usehas still be had restricted by the insulating ones of the transformers and electrical condensers. |
( productos químicos sintéticos ) | 3- There take place significant concentrations of toxicsubstances. If these filter to the soil or to the water, they can contaminate the water supply, the air, the crops and the domestic animals. Many of these products have been associated with congenitalhuman faults, abortions and organic diseases. |
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I ABUSE PESTICIDES AND OTHER TOXIC SUBSTANCES

Pesticides or pesticides are the terms that are applied to the chemical agents used in thecontrol of plagues (insects, bad grasses, diseases of the plants). The extensive use of synthetic pesticides derived from the chlorinated hydrocarbons has had collateral disastrous effects for the...
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