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.
A soil test indicates which nutrients are lacking. Most plant nutrition comes freely from the carbon, hydrogen and oxygen in the air and water. Fertilizer and organic matter worked into the soil provide the remainder of the nutrients, if soil conditions require a boost to help the plants thrive.he micronutrients boron, manganese, copper, zinc, chlorine, nickel, cobalt and molybdenum are required in such minute amounts for plant growth that lack is not particularly a problem. The best way to ensure a good supply of these plant vitamins is to feed your soil with manure or other organic material.