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.
1 Explain what a pesticide is and the importance of chemistry in pesticides. 2  Explain the parts of a pesticide label. 3  Focus on the trade name, common name, chemical name, and chemical formula. 4  Have each student complete âThe Pesticide Labelâ exercise.ctivity (Explore): 1  Explain what a pesticide is and the importance of chemistry in pesticides. 2  Explain the parts of a pesticide label. 3  Focus on the trade name, common name, chemical name, and chemical formula. 4  Have each student complete âThe Pesticide Labelâ exercise.