污染已成为人类所面临的严重社会问题，人类对于自己赖以生存的地球恣意掠夺、破坏，这已经给人们敲响了警钟。谈谈你对环境污染的看法并写一篇议论文包括以下几点内容：
1. 当今污染已成为严重的社会问题。空气、河海、土壤的污染对动物和人类十分有害。
2. 列举 2~ 种污染的原因和现象及其后果。
3. 希望科学家们找出解决办法，恢复大自然的本来面貌。
Today, pollution has bee a serious problem to us. It means that the air, seas, rivers and land are polluted by waste or poisonous things. It does harm not only to human beings but also to animals (It does harm to animals, as well as human beings.)。
We cannot have fresh air because many factories have the poisonous smoke sent into the air. Beautiful parks are made dirty by plastic tins and bags. Fish die from the polluted water. It is said that strange diseases have appeared in some places because of pollution.
I hope scientists can find ways to solve the serious problem. We are looking forward to seeing the clear sky, clean rivers and beautiful parks again.