Biomagnification Speech

It was hailed as a miracle for all people for a number of reasons, including a low toxicity to humans, highly toxic to a wide range of insects, insoluble; so it didn’t have to be applied often and inexpensive. It was carelessly used during the War to reduce mosquito populations and thus control malaria where the U. S troops were fighting and to prevent the spread of lice in civilian populations in Europe. Its second major accomplishment was to eliminate a typhus epidemic in Naples during 1943.

The World Health organization estimates EDT helped save the lives of approximately 25 million CAUSES As chlorinated hydrocarbons are highly soluble in lipids, and most lipids found in an ecosystem are in biological tissues, the compounds are absorbed and stored in the bodies of consumers. If the consumer is caught and eaten, its fat is digested and the pollutant moves into the fat of the next consumer. It can only become progressively more concentrated as it moves up the food chain, due to the 10 percent law.

The use of chlorinated hydrocarbons has led to habitat loss and whole species going extinct through unforeseen secondary effects Toxic accumulation of harmful chemicals generally only occurs after it has moved up the food chain to fourth of fifth order consumers. This means a drastic lowering of high order predators that control numbers of lower level species, so naturally an influx of these organisms arises. This results in competition for mates and a higher chance for the spread of disease.

They are however around 40 times more toxic and insects are developing resistance to them. Another concept of integrated pest management, or IMP, has been developed to improve the control of pests while decreasing the need for pesticides. Some example of the methods they are using include biological controls, and cultural practices such as timing planting and harvest to avoid periods of peak activity by pest pieces. Crops have been introduced with built in insect protection, incorporated into their seeds using modern gene technology.

The pesticides are derived from a particular species of plant containing a naturally occurring pesticide. It is estimated that the carbon emission savings from introduction of genetically engineered crops is equal to removing 8. 6 million cars from the road for one year. While this is not directly related to solving pontification of toxins, by incorporating this technique harmful pontification could longer occur.