Pollution has become a social problem in today's world because people in an increasingly populated and industrialized world are polluting the environment in which they live. The growing population increases the demands for the world's limited water and land. This rise in population is followed by more and more people's desire for a better standard of living. So the greater need for electricity, water and merchandise will inevitably bring about more waste materials that need to be disposed of. The problem has raised increasing concern for creatures and their environment.
在當(dāng)今世界,人口越來越多,社會(huì)也越來越工業(yè)化,生活在這種條件下,人們?cè)谖廴局约旱木幼…h(huán)境,因此污染已經(jīng)成了一個(gè)社會(huì)問題。人口增長增加了人們對(duì)世界上有限的水和土地等的需求。隨著人口增長,越來越多的人渴望更高的生活水平。于是對(duì)電、水和商品的更大需求必然導(dǎo)致更多的廢物需要處理。這個(gè)問題已經(jīng)引起人們對(duì)生物及其環(huán)境的日益關(guān)注。
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