Make use of waste materials (7)
I believe the answer is:
recycle
(Other definitions for recycle that I've seen before include "Keep and use again" , "Use (rubbish) again" , "be green" , "save resources" , "attempt to save the world?" .)
I believe the answer is:
recycle
(Other definitions for recycle that I've seen before include "Keep and use again" , "Use (rubbish) again" , "be green" , "save resources" , "attempt to save the world?" .)