environmental
background
box
cardboard
carton
collection
conscious
container
copy
disposable
disposal
earth
eco
ecological
ecology
environment
garbage
group
heap
industry
junk
many
material
object
organic
paper
pollution
protect
protection
recycle
recycling
refuse
reusable
reuse
rubbish
sheet
sorting
space
table
text
trash
used
utilization
waste
wooden
world