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gmfood英語保護環境
篇一：gm food 英語作文
GM food is the abbreviation of the genetically—modified food,which is most commonly used to refer to crop plants created for human or animal consumption using the latest molecular biology techniques. GM food has broad prospects in the future.There are many advantages of it.Firstly,it has effective control of insect pests. Crop losses from insect pests can be staggering, resulting in devastating financial loss for farmers and starvation in developing countries. Farmers use many tons of chemical pesticides annually. Consumers do not wish to eat food that has been treated with pesticides because of potential health hazards, and run-off of agricultural wastes from excessive use of pesticides can poison the water supply and cause harm to the environment. Growing GM foods can help eliminate the application of chemical pesticides and reduce the cost of bringing a crop to market.Secondly, it has the good resistance in desease.There are many viruses, fungi and bacteria that cause plant diseases. Plant biologists are working to create plants with genetically-engineered resistance to these diseases so that can solve this problem.Thirdly in the aspect of nutrition,nowadays, rice does not contain adequate amounts of all necessary nutrients to prevent malnutrition. If rice could be genetically engineered to contain additional vitamins and minerals, nutrient deficiencies could be alleviated.
Howere,we can not ignore some protential risks.
Environmental activists, public interest groups, professional associations and other scientists and government officials have all raised concerns about GM foods, and criticized agribusiness for pursuing profit without concern for potential hazards Firstly ,they hold the view that it will bring the environmental hazards. it may reduce the effectiveness of pestcides.Just as some populations of mosquitoes
developed resistance to the now-banned pesticide DDT, many people are concerned that insects will become resistant to B.t. or other crops that have been genetically-modified to produce their own pesticides.Secondly, there maybe harmful to human health . There is a growing concern that introducing foreign genes into food plants may have an unexpected and negative impact on human health. Thirdly,there are also economic concerns .Bringing a GM food to market is a lengthy and costly process, and of course agri-biotech companies wish to ensure a profitable return on their investment. Many new plant genetic engineering technologies and GM plants have been patented, and patent infringement is a big concern of agribusiness. Yet consumer advocates are worried that patenting these new plant varieties will raise the price of seeds so high that small farmers and third world countries will not be able to afford seeds for GM crops, thus widening the gap between the wealthy and the poor.
For my part ,Genetically-modified foods have the potential to solve many of the world's hunger and malnutrition problems, and to help protect and preserve the environment by increasing yield and reducing reliance upon chemical pesticides and herbicides. Yet there are many challenges ahead for governments, especially in the areas of safety testing, regulation, international policy and food labeling. Many people feel that genetic engineering is the inevitable wave of the future and that we cannot afford to ignore a technology that has such enormous potential benefits. However, we must proceed with caution to avoid causing unintended harm to human health and the environment as a result of our enthusiasm for this powerful technology.
篇二：gm food 英語作文
What is GM food? Talk about the benefits and risks of GM food.
GM foods,so called genetically modified foods,are the foods that are derived from genetically modified organisms. Genetically modified organisms have had specific changes introduced into their DNA by genetic engineering techniques. GM technology is the separation and decorated artificial genes into the genome of organisms, and to gene expression, access to new traits of biological technology.
Since this technology was practiced,genetically modified food has developed a lot.In 1983,world’s first case of successful cultivation is tobacco.In 1994,the U.S. first case of GM food is tomatoes.In 1996,large-scale production has come into use.Since that,the amount of GM foods increased by 52 times each year.People have shared a lot of advantages as time went by.GM crops are more productive and have a larger yield. They can offer more nutritional value and better flavor. What is more,a possibility that they could eliminate allergy-causing properties in some foods and inbuilt resistance to pests, weeds and disease. They are also more capable of thriving in regions with poor soil or adverse climates and remaining fresh longer.Still,at the same time,much danger has been put up all the way. For example,in August 1998,a British research institute reported that rats ate GM potatoes, which was insect-resistant transgenic potatoes produced by snowdrop lectin .And
there was damage to internal organs and immune systems and this impeded the growth of mice.Apart from what we have mentioned above,genetically modified foods has also exerted influence on the possible impact of human consumption and may affect the ecological environment,such as super weed problems,the impact of biodiversity and destruction of ecological balance.What is more serious,GM crops may expand to“genetic pollution”,which might destroy the biodiversity, leading to extinction of individual species,affect the hidden dangers of biological diversity and GM foods have yet to appear directly harmful to human cases.
In my opinion,the benefits outweigh the potential risks .One one hand ,trust in food safety and regulatory systems .On the other hand,watch out the further safety evaluation and risk assessment.
篇三：gm food 英語作文
You are required to write an article titled GM Food on the basis of websites and sofewares. In the article, you are expected to present the points as follows: the definition of GM food, the possible prospects and problems, your attitude towards GM food. The article should be no less than 500 words. Genetically modified (GM) foods are foods derived from genetically modified organisms. Genetically modified organisms have had specific changes introduced into their DNA by genetic engineering, using a process of either Cisgenesis or Transgenesis. GM foods were first put on the market in the early 1990s. Typically, genetically modified foods are transgenic plant products: soybean, corn, canola, and cotton seed oil.
Last year, the Ministry of Agriculture awarded the safety cerfiticate to two kinds of transgenic rice, and this triggered a large-scale discussion. Many people oppose it and refuse to eat GM foods. They objected to GM foods on several grounds such as:
GMF’s have not been a success, there is no test in human being. The GM foods maybe change human gene in future.
Genetically modified crops will affect other plants around them and change other species, then more and more species will vary or disappear.
GM foods have the advantage in both price and output, so traditional farmers will lose the market. Then few companies who have transgene proprietary technology will control food market.
On the contrary, many proponents of GM foods have other opinions:
People eat GM foods, then the foods are analysed and assimilated like normal foods, there is no theory to support that GM foods will change human being’s gene.
There is a food supply issue in the developing world, in order to meeting the demand for food and confronting the climate change we need to increase use of GM crops. The GM crops use less pesticide, It is more safty than normal crops.
Actually, more and more GM foods appear in our lives. When you have dinner in the restaurant, maybe you eat the GM oil, GM corn and GM rice, but you just don’t know.
Genetically modified food is science brings us the product, now of cultivated land area of less, genetically modified food will play more and more important role, if the use of transgenic technology can solve the world food shortage problem, it is not quite good? Genetically modified food in the world now is a kind of new things, new things, people need time to promote its accept also need some time, we cannot put new things in the cradle, a stick to it from the beginning, that cannot be eaten of genetically modified food. You think we
don't of hybrid rice is a genetically modified food? But we can open it from? And if they can pass the soybeans genetically modified technique using atmospheric nitrogen inside his
produces fertilizers to other crops gene transfer in the mankind, it is. Everything is both sides, especially technology, science and technology is a double-edged sword? Genetically modified food has its disadvantages, like some worry, because it will not change, will destroy genetic evolution, etc. Genetically modified food and nutrition inside it isn't like that, the propaganda of people worry is understandable, after accepting a new things take time. But we also should see the benefits of them,
I think as time slowly past, genetically modified foods will be accepted by people.
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