Essay For Food Security

635 words - 3 pages

Wu PAGE 3Tiffany WuEarhartProfessor CrachioloEAP: Essay for "Food Security"9 Nov 2014Challenges of the Food Supply SystemMore than one in seven people today still do not have access to sufficient protein and energy from their diet, and even more suffer from some form of micronutrient malnourishment (FAO). It means that the food insecurity is a widespread and urgent problem. Nevertheless, the global fast growing population exacerbates the situation and imperils the food security. Therefore, the food supply system now faces 3 main challenges: growing population, polluted water, and natural disasters.First of all, the global growing population limits the food supply. Experts predicted that at the current growth rate of 77 million new people a year, the population would swell to 9 billion by 2050, increasing requirements for food, water, and health care in countries where basic necessities were already scarce (Lindsay, par.1). Visibly, continuing population and consumption growth will mean that the global demand for food will increase for at least another 40 years (Godfray et al. 30), but the de facto food storage and farmland are limited. It is necessary to grow more food in the same area of lands. Growing too much food makes an effect of excessive reclaim that means the soil is not suitable for growing food, therefore the output will decline. Also, it causes the desertification of farmland. Some 10 to 20% of drylands are already degraded, and ongoing desertification threatens many of the world's ecosystems (Hogen, par. 3). It shows that the fast growing drylands have made a serious impact on the ecosystems, and it has influenced the food yield. As a result, there will be less food production and menace the food supply.The second challenge is water pollution. Crops' growth need the participation of water, but the polluted water make terrible effects on the crops instead of providing the nutrient to them. Factory is one of the most mainly causes of water pollution. The factories discharge sewage that contains many kinds of harmful chemical materials which...

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