Agricultural Impact on Terrestrial and Aquatic Life


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The increasing global population in the last century has resulted to a massive demand for food production to feed the growing masses. According to Tilman et al (2009), the hunters and gatherer lifestyle was only able to support 4 million people globally as compared to the 6 billion people the agricultural sector has to support today. Farming and agricultural food production has doubled in the past 50 years. This has resulted to a 6.87 rise in nitrogen fixation, a 3.48 rise in phosphorous fertilization, a 1.1 rise in cultivated land proportion and a 1.68 rise in the amount of land under irrigation (Tilman, 1999). If a similar trend is observed in the next similar duration, there will be a profound increase in the fixation of major chemical composition of life supporting elements such as nitrogen and phosphorous.