capacity, iron deficiency anemia is found in the soil in very small amounts to change the rate, in the shape of a plant for the benefit of the plant will be used even more slowly these elements in very small amounts, but when crops for long periods.Although these elements are capacity, nutrients, plants that you want to plant these elements in small quantities, but if you have a very large quantities may cause toxic pesticides and also sent to affect the ecosystem environment(heavy metal), or toxic elements (toxic element) (faculty faculty the earth science,2544 ).
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