Page 23 - GEL 1103 เอกสารประกอบการเรียนบทที่ 2
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English for Communication and Study Skills
1. The air in the big city nowadays is heavily polluted by pollution
which is called smog.
Source: http://www.cbc.ca/news/technology; Retrieved on 9 May 2016.
From the picture; explain the cause of smog.
2. In many places, soil erosion occurs which caused by
deforestation.
Source:http://artifact1-landforms.weebly.com/slow-processes-of-
change.html; Retrieved on 9 May 2016.
From picture: Explain the cause of soil erosion.
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