Text Box: Pencemaran Air 

http://www.doe.gov.my/index.php?option=com_content&task=view&id=1372&Itemid=714&lang=ms 
Text Box: Pencemaran Udara

https://members.tripod.com/~lttan/index.html
Text Box: Punca 

https://wanafindy.tripod.com/minggu_6/punca_pencemaran_sungai.jpg
Text Box: Kesan 

https://wanafindy.tripod.com/minggu_6/kesan_pencemaran_air.jpg 
Text Box: Punca 

https://wanafindy.tripod.com/minggu_6/punca_pencemaran_udara.htm
Text Box: Kesan 

https://wanafindy.tripod.com/minggu_6/img14c.gif