It`s compounds are essential for life; used in medicines and fertilizer;?
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Well, nitrogen is a major ingredient in fertilizers, it is used in medicines, and it is essential for life.  \n\nBut so is carbon.  \n\nIf the question says fertilizers, I'd go with nitrogen.
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Fertilisers or fertilizers are compounds given to plants with the intention of promoting growth; they are usually applied either via the soil, for uptake by plant roots, or by foliar spraying, for uptake through leaves. Fertilisers can be organic (composed of organic matter, i.e. carbon based), or inorganic (containing simple, inorganic chemicals). They can be naturally-occurring compounds such as peat or mineral deposits, or manufactured through natural processes (such as composting) or chemical processes (such as the Haber process).\n\nFertilizers typically provide, in varying proportions, the three major plant nutrients (nitrogen, phosphorus, and potassium), the secondary plant nutrients (calcium, sulfur, magnesium), and sometimes trace elements (or micronutrients) with a role in plant nutrition: boron, manganese, iron, zinc, copper and molybdenum.
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Most nitrates are fertilizers for plants .
250351
There are many chemical elements had a medicinal uses,platinum, radioactive isotopes of elements (iodine, carbon 13)which used in cancer therapy or as a tracer in identification of sickness,also chemical elements used as disinfectants for medicinal purposes, in general all medicines are chemicals formulated for therapy and specific chemical element played the major role in the therapy.
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Fruit and vegetables contain vitamins, minerals and trace minerals as well as phytohormones and fibers. All these ingedigents are important in human diet but are included less and less in modern diets. They are supposed to have been mainstays of human diet in the past but not any more. \nThis is the reason why the recommendations name them - to remind us to eat them
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Well considering that most cell components are organic then it is easy to see why. Organics must contain carbon!\nFe is not present as much as it isnt needed in large quantities. Large amounts may even be poisonous!
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Nitrogen is important to plant growth.
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nitrogen, phosphorus, and potassium \n\nGood Luck :)
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All living things are made up of Carbon, Hydrogen, Oxygen and Nitrogen so there will be plenty of these in the produce section of the grocery store.  \nAs for compounds try fructose sugar, sucrose sugar, sodium chloride salt, cellulose in the cell walls of fruit and veges.  \nIn the hardware store you can find the metal elements copper, zinc and aluminium.\nThere are also many many more but hopefully this helps.
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Why is B12 important?\nVitamin B12 is an essential vitamin, which you need for good health. It plays a vital role in several important body functions. it is used to make red blood cells and DNA (the source of genetic information for all body cells). B12 is also required for making a protective layer around nerve cells in the nervous system.
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Elements:\n\nMain constituents are H, C, O, N, with considerable amounts of Ca, Na, P, S, Cl, less Mg, K, Fe, I, and traces of about any common element.\n\nThe most common simple molecule is water.\n\nMost important "inorganic" compounds are CaCO3 (in the bones), NaCl (dissolved in the water) and Ca2(PO4)OH in the teeth.\n\nThe main classes of chemicals are carbohydrates and proteins, which form the main structural elements of our cells as well as most of the functional framework. (DNA for instance has a modified carbohydrate linked by phosphate as its structural basis). Fats (triglycerides of fatty acids) are abundant, but don't participate structurally in most features of human anatomy except as fillers (lower skin, lips, breasts...)
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To add elements and minerals to the body in the form of calcuim, potassium, iron, etc.
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Potassium is a mineral that is found naturally in foods and is necessary for many normal functions of the body, especially beating of the heart. Potassium chloride is used to prevent or to treat a potassium deficiency.
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For a compound to be organic it has to have Carbon as one of its elements.
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Nitrogen Phosphorus and Potassium remember NPK These elements are always essential to a plant and it's roots
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nitrogen for vegetative growth\nphosphorous for flowering and root growth\npotassium for seed and protection from pests and frosts\nmagnesium to a plant is like iron to people whereas we have iron as the central molecule of our blood plants have magnesium in their circulatory system..\n\nIf you look at the list of minerals and micronutrients on a potent multivitamin you will see a list of trace elements that are both considered essencial for humas but also for plants which like all of those in various amounts depending on type of plant and additionally they also like boron.\n\nOb1
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development of drugs using biochemistry\nunderstanding of organic processes\nenergy production\nmany others