转基因食品优缺点英文详解.ppt

Genetically Modified Foods Whats GM foods GM and Non-GM contrast GM foods advantages GM foods drawbacks View Whats GM foods Genetically modified (GM) food, is the use of biological technology,transfer some biological gene to other species, change its character, nutritional quality. The goals of the human need to GM organisms for direct food or as raw material processing production of food is genetically modified food. GM and Non-GM contrast Potatoes Tomatoes Beans GM foods advantages Increase crop yield per unit area. Reduce the production cost. Through transgenic technology can enhance the ability of crop pests, anti-virus. Improve the water resistance of agricultural products, extend the freshness. Get rid of the season, the influence of the climate. Positive comments Gpaul goettlichs view First,it can make the food contain more nutrition. Then,it can improve farming productivity in food shortages places. And he thinks GM foods can effectively ease Global hunger problem. GM foods drawbacks A number of studies have indicated that the GM foods is impaired for mammals the immune function. Its more studies that the test with the hamster after eating genetically modified food, to its third generation, its extinct. Affect other species by genetic spread. Cause allergies.