Recycling & reuse of of solid waste
Recycling (Visual Aids for Understanding)
https://www.youtube.com/watch?v=jAqVxsEgWIM
https://www.youtube.com/watch?v=zyF9MxlcItw
https://www.youtube.com/watch?v=jODl07akVHM\
https://www.youtube.com/watch?v=isEV-mCFPiY
Processing (Visual Aids for Understanding)