Nitrogen Essays

Impact of Nitrogen and Phosphorous Inputs on Water Quality

Both Nitrogen and Phosphorous are necessary in agriculture for a farmer to achieve optimum yields in most crops, they have to use fertilizer which often contains either nitrogen or phosphorous. Despite their importance, these elements in excess can affect the environment adversely. Eutrophication is enhanced when nitrogen and phosphorous are in excess in surface waters and where nitrogen is in excess in ground water. (www. soil. ncsu. edu/) Nitrogen makes up about 78 percent of the gases in the atmosphere….

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The Neolithic and Industrial Revolutions

The two changes in the use of the earth’s resources that had the greatest effect on the world population were the Neolithic and the industrial revolutions. The Neolithic revolution (a.k.a. agricultural revolution) was a change in the way of life of our ancestors. It took place about 8000 years ago among various tribes in Asia and the Middle East. It included a transition from foraging and hunting to the domestication of animals (most probably starting with the dog) and to…

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