Overview. Gastric intubation via the nasal passage (ie, nasogastric route) is a common procedure that provides access to the stomach for diagnostic and therapeutic purposes.
The impact of pesticides consists of the effects of pesticides on non-target species. Pesticides are chemical preparations used to kill fungal or animal pests. Over 98% of sprayed insecticides and 95% of herbicides reach a destination other than their target species, because they are sprayed or spread across entire agricultural fields.
C:\Documents and Settings\Denise\My Documents\PESTICIDE. CHARACTERISTICS THAT AFFECT WATER QUALITY_files\gndwatr4.gif. High levels of nitrate, from NO. 3 and NH. 4, in surface or ground water and excess phosphate, from PO. 4, in surface water are common pollutants associated with fertilizers.