The Organic Foods
Are organically grown foods the best food choices?The advantages claimed for such foods over conventionally grown and marketed food products are now being debated. Advocates of organic foods -- a term whose meaning varies greatly -- frequently proclaim that such products are safer and more nutritious than others. The growing interest of consumers in the safety and nutritional quality of the typical North American diet is a welcome development. However, much of this interest has been sparked by sweeping claims that the food supply is unsafe or inadequate in meeting nutritional needs. Although most of these claims are not supported by scientific evidence, the preponderance of written material advancing such claims makes it difficult for the general public to separate fact from fiction. As a result, claims that eating a diet consisting entirely of organically grown foods prevents or cures disease or provides other benefits to health have become widely publicized and form the basis for folklore. Almost daily the public is besieged by claims for no-aging diets, new vitamins and other wonder foods. There are numerous unsubstantiated reports that natural vitamins are superior to synthetic ones, that fertilized eggs are nutritionally superior to unfertilized eggs, that untreated grains are better than fumigated grains and the like. One thing that most organically grown food products seem to have in common is that they cost more than conventionally grown foods. But in many cases consumers are misled if they believe organic foods can maintain health and provide better nutritional quality than conventionally grown foods. So there is real cause for concern if consumers particularly those with limited incomes, distrust the regular food supply and buy only expensive organic foods instead.
2017届高考英语一轮模块复习学案:模块2.1《tales of the unexplained》(原卷版)
2017届高考英语一轮模块复习单元训练:模块7.4《public transport》(解析版)
2017届高考英语一轮模块复习单元训练:模块7.2《fit for life》(原卷版)
2017届高考英语一轮模块复习单元训练:模块7.4《public transport》(原卷版)
2017届高考英语一轮模块复习单元训练:模块5.1《getting along with others 》(原卷版)
2017届高考英语一轮模块复习单元训练:模块7.1《living with technology》(解析版)
2017届高考英语一轮模块复习单元训练:模块5.1《getting along with others 》(解析版)
2017届高考英语一轮模块复习单元训练:模块8.4《films and film events 》(原卷版)
2017届高考英语一轮模块复习单元训练:模块6.3《understanding each other》(原卷版)
2017届高考英语一轮模块复习单元训练:模块4.3《tomorrow’s world》(原卷版)
2017届高考英语一轮模块复习单元训练:模块8.2《the universal language》(解析版)
2017届高考英语一轮模块复习单元训练:模块6.4《helping people around the world》(原卷版)
2017届高考英语一轮模块复习单元训练:模块8.1《the written word》(原卷版)
专业医生告诉你 如何在喝酒时就能避免宿醉
2017届高考英语一轮模块复习学案:模块1.1《school life》(解析版)
2017届高考英语一轮模块复习学案:模块2.2《wish you were here》(原卷版)
2017届高考英语一轮模块复习单元训练:模块8.2《the universal language》(原卷版)
2017届高考英语一轮模块复习单元训练:模块7.3《the world online》(解析版)
2017届高考英语一轮模块复习单元训练:模块8.3《the world of colours and light 》(原卷版)
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2017届高考英语一轮模块复习单元训练:模块4.2《sports events》(原卷版)
2017届高考英语一轮模块复习单元训练:模块4.2《sports events》(解析版)
2017届高考英语一轮模块复习单元训练:模块4.1《advertising》(原卷版)
2017届高考英语一轮模块复习单元训练:模块6.1《laughter is good for you》(原卷版)
2017届高考英语一轮模块复习学案:模块1.3《looking good, feeling good》(解析版)
2017届高考英语一轮模块复习单元训练:模块6.4《helping people around the world》(解析版)
2017届高考英语一轮模块复习单元训练:模块6.1《laughter is good for you》(解析版)
2017届高考英语一轮模块复习单元训练:模块7.3《the world online》(原卷版)
2017届高考英语一轮模块复习单元训练:模块5.2《the environment》(原卷版)
2017届高考英语一轮模块复习单元训练:模块5.3《science and nature》(原卷版)