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A very important issue....we all have to do a good use of solid wastes and recycling the most that we can, it´s necessary for the earth.....it´s demanding that.
It was a bit fast for me but I could understand it.Also I'm looking for someone who could speak to me.I would appreciate if somebody helped me.e-mail: hossein_ayati@y!
This theme is very useful to use in my classrooms. The Earth planet asks for help, and we need to do something. I'm trying to change my students' minds on this.
People say 3R's !
It is difficult for me