Convert into reusable material (7)
I believe the answer is:
recycle
(Other definitions for recycle that I've seen before include "Use (rubbish) again" , "To use up left-overs" , "Convert waste to new usage" , "be green" , "save resources" .)
I believe the answer is:
recycle
(Other definitions for recycle that I've seen before include "Use (rubbish) again" , "To use up left-overs" , "Convert waste to new usage" , "be green" , "save resources" .)