請以"Soil pollution"為題寫一篇英文短文。內容包括：
1.分析土壤污染的成因；
2.如何減少和預防土壤污染。
注意：
1.詞數100左右；
2.可以適當增加細節，以使行文連貫。
參考詞匯：pesticide 殺蟲劑；chemical fertilizer 化肥；residue殘留物；substance物質
Soil pollution________.

【考點】提綱作文．

【答案】Soil pollution
Soil pollution is caused for various reasons.First，the overuse of pesticides and chemical fertilizers in farming causes harmful chemical residues to be left in the soil.Second，wastewater，gases and solids in industry are illegally poured into or piled on the soil without being scientifically treated.All of these are causing more and more serious pollution and damage to the soil.
 To prevent the soil pollution from becoming more serious，we must take a lot of measures.First，we should ask people to pay attention to it and change their bad habits.Second，our government is supposed to make stricter laws to punish those businesses which illegally emit waste water or gases.Last，scientists should try to develop harmless pesticides and chemical fertilizers to reduce soil pollution.