تقویت زبان- انگلیسی-درک مطلب: موضوع دنیای طبیعی-فرشید کامرانی

دانش آموزان عزیز سلام

من فرشید کامرانی فارغ التحصیل مهندسی برق دانشگاه صنعتی شریف هستم.

Some farmers believe that growing fruit and vegetables that have been changed so that their genes are different is a good way to totally stop pests and improve the quality of their produce. However, this type of farming has both advantages and disadvantages. J

One of the advantages is that farmers can grow plants that produce a poison that is harmful to small animals like flies and caterpillars. This means that farmers will not have to use chemicals to kill these animals and so this should be better for the surrounding environment and the earth that plants grow in. As a result, it could help to protect other plants as well as the living space of any animals in the area. L

On the other hand, farmers usually only spray their fields once or twice per year but these new plants would be toxic all year round. Furthermore, it is possible that over time the pests may stop being killed by the toxins and so the problem would be worse than ever. The toxins may also be poisonous to other plants and animals and this would upset the way plants and animals live and grow together and may lead to more animals becoming at risk of extinction. J

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