fer from their garden variety neighbours. But there is a broad scientific consensus that the present generation of GM food is safe. Even so, this does little to reassure consumers. Food frights such as “mad cows” disease and revelations of cancercausing dioxin in Belgian food have sorely undermined their confidence in scientific pronouncements and regulatory authorities alike. GM food have little future in Europe until this faith can be restored.
The second big wrong about GM food is that it may harm the environment. The producers argue that the engineered trait—such as resistance to certain brands of herbicide or types of insects and virus—actually do ecological good by reducing chemical use and improving yields so that less land needs to go under the plough. Opponents retort that any such benefits are far outweighed by the damage such crops might do. They worry that pesticideresistant genes may spread from plants that should be saved to weeds that have to be killed. They fear a loss of biodiversity. They fret that the inbuilt resistance to bugs that some GM crops will have may poison insects such as Monarch butterfly, and allow other, nastier bugs to develop a natural resistance and thrive.
Many of the fears are based on results from limited experiments, often in the laboratory. The only way to discover whether they will arise in real life, or whether they will be any more damaging than similar risks posed by conventional crops and farming practice, is
特别声明:①凡本网注明稿件来源为"原创"的,转载必须注明"稿件来源:育路网",违者将依法追究责任;
②部分稿件来源于网络,如有侵权,请联系我们沟通解决。
25人觉得有用
13
2010.10
【网络综合 - 研究生考试(考研)试题】
With medicine, the boon of biotechnology has been obvious.......
13
2010.10
诺研究的不同观点。 全文精译 一张去年九月份从太平洋上拍的照片让人震惊。使用美国国家航空航天......
13
2010.10
een hearing the tune long enough to recognize the change in key. 【解析】 本句的结构并不难,......
13
2010.10
rming. [B] nature’s climatic riffs. [C] Human behavior.[D] natural warming in the Paci......
13
2010.10
Galapagos Islands show that some 4,000 years ago, an El Nino occurred only 60 years or so. Stud......
13
2010.10
Text 1 An image taken of the Pacific Ocean last September is astonishing. Made by using data......