ing an important scientific field and is drawing a greater attention. it involves the work against water (air) pollution, desert expansion, soil erosion, garbage (esp. plastic waste), acid rain and so on. to solve the above problems, much knowledge and research work is needed. scientists as well as common people attach primary importance to environmental protection.
without environmental protection, human beings would not last long. if there were serious desert expansion and soil erosion, we would have no land to farm and no food to eat. if there were polluted air, water, we would get (suffer from) diseases and become weak. if there were endless hunting of animals, we would kill human beings ourselves in the end.it is a duty for each person on the earth to protect his environment. living surroundings are so significant for us that everyone should pay attention; no littering and no spitting everywhere, etc.
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