POLUTION by Nga Dương Thị Thu https://padlet.com/duongttnga04/kevj6rw2mmbx Answer the questions? en-us 2016-06-16 07:54:25 UTC 2016-06-17 01:25:13 UTC hello@padlet.com https://padlet-assets.s3.amazonaws.com/icons/Alarmclock.png What are the reasons for pollution? duongttnga04 https://padlet.com/duongttnga04/kevj6rw2mmbx/wish/114803029 2016-06-16 07:59:54 UTC https://padlet.com/duongttnga04/kevj6rw2mmbx/wish/114803029 Khanhcutting down trees duongttnga04 https://padlet.com/duongttnga04/kevj6rw2mmbx/wish/114805870 2016-06-16 08:34:59 UTC https://padlet.com/duongttnga04/kevj6rw2mmbx/wish/114805870 Tran Hieu: dumping waste duongttnga04 https://padlet.com/duongttnga04/kevj6rw2mmbx/wish/114805902 2016-06-16 08:35:28 UTC https://padlet.com/duongttnga04/kevj6rw2mmbx/wish/114805902 Do Tien: using pesticides duongttnga04 https://padlet.com/duongttnga04/kevj6rw2mmbx/wish/114805950 2016-06-16 08:35:59 UTC https://padlet.com/duongttnga04/kevj6rw2mmbx/wish/114805950 Hai Nam: using pesticides duongttnga04 https://padlet.com/duongttnga04/kevj6rw2mmbx/wish/114805989 2016-06-16 08:36:17 UTC https://padlet.com/duongttnga04/kevj6rw2mmbx/wish/114805989 Thu: Using fertilizers kkieu42 https://padlet.com/duongttnga04/kevj6rw2mmbx/wish/114807258 2016-06-16 08:50:57 UTC https://padlet.com/duongttnga04/kevj6rw2mmbx/wish/114807258