What is the science behind recycling?

when we recycle, the particles of the substance is broken down. take the atom for example. we can break it into nothingness and shape it into whatever we feel. it is the same with recycling. for example paper comes from trees. you could either recycle all the writing and ink on the paper and make it into more paper. you could also make it into cardboard and so forth. that is all i know right now. ill go research some more. g2g :):):):):) hope i helped you out. !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!