帮忙修改这篇英语作文，谢谢了

既如此，我帮你。供参考。
It is important that we proctect our surroundings.The reason why(原表达不对。这里用why引导定语从句较合适) so many people suffer diseases（患病用suffer）is that our surringdings has been bad(badly是副词，用在这里不对，要用形容词bad，且根据句意，此处用完成时较好).
As we know(“我们知道”用As we know),scientists have(过去完成时要改为现在完成时) found pesticides in the Arctic(北极Arctic是专有名词，首字母要大写,且前加定冠词the)，which surprises(原句有语病，改为非限定性定语从句) us.I think it is necessary to do something for our surringdings.(原句是双重从句，较混乱)
Many rivers are(应用一般现在时) polluted.Fishes have to live in these dirty rivers.In recent years,the number of the cars has increased rapidly.We have to breathe(breath是名词，breathe才是动词) the air full of emissions.
Even thought (逗号省去)environmental protection departments have taken measures to protect the surroundings，（句号改逗号）some people still don't attach importance to proctect the surroundings.It must be realized that surrounds is important to the coming generations.We should start out small.（“从小事做起”是start out small）I hope that our surringds will（用一般将来时） get better than before.