Vinyl chloride, chloromethane and the banned pesticide DDT are examples of chlorinated hydrocarbons. Chlorinated hydrocarbons are organic molecules wherein chlorine has been substituted for some of...
Resident flora of certain areas plays a definite role in maintaining health and. normal function. Members of the resident flora in the intestinal tract synthesize. vitamin K and aid in the absorption of nutrients. On mucous membranes and. skin, the resident flora may prevent colonization by pathogens and possible. disease through âbacterial interference.â The mechanism of bacterial interference. is not clear.
Plant nutrients include the three primary macronutrients (NPK, or nitrogen, phosphorus and potassium) obtained from fertilizers, and the other three macronutrients (calcium, sulfur and magnesium) whose availability is often managed by manure applications, composting and liming.ron when found in the soil is usually in the form of iron sulfate and/or chelated iron. Deficiencies of either iron or copper often show up in yellowing or even necrosis of the leaves. Manganese(lV) oxide Boron crystals Molybdenum aids in the utilization of nitrogen and the building of amino acids.