brian williams雅思范文strong:食品与生物科技
Food can be produced more cheaply due to the development of machinery and biological technology. To what extent do the advantages outweigh the disadvantages?
With the development of machinery and biological technology, food such as crops, vegetables, fruit and meat can be produced more cheaply. On the one hand, consumers can enjoy low food price. On the other hand, foods are no longer tasty and safe as before. Some of the methods ud have harmful effects on people’s life and environment. As I e this, the advantages outweigh the disadvantages.
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aro少儿英语口语视频>gatherFirst, low cost in food production is good news for most people, especially for tho who suffer from starvation. The u of machinery makes food production more efficient and at the same time saves labor cost, which is undoubtedly beneficial. However, the u of some biological technology has led to some negative effects that will harm people’s health.
学会计有方法First, scientists modified certain genes to make fruit bigger and vegetables stronger to resis
model behaviort pests or endure bad weather conditions. The fruit become more appealing, but we never know the possible harm in the future. That is why genetically-modified food is not very popular the days.
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Secondly, to make crops, vegetables and fruit grow faster, chemical fertilizer is often ud in production. To kill pests, pesticide is also u to ensure more output. Our food is heavily polluted. Not cleaning carefully, people will take certain dos of poisonous chemicals in every meal, which is a great health hazard. Moreover, food is not as tasty as before becau of the unnatural growing process.
As for meat, chickens, pigs are also not raid naturally. Instead, they are caged and crammed with food in a short time to make them grow faster. In some food factory, the animals are even fed with hormones. Meats have become cheap becau of this shortened production period, but they are no longer tasty and may have lost the nutrition.
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