environmental
accumulation
background
bag
bin
black
building
city
collect
consume
curb
dirt
dirty
disposal
dispose
dry
dump
ecology
environment
exterior
garbage
group
heap
junk
junkyard
messy
midden
nature
object
outdoor
outside
pack
package
pile
plastic
pollute
pollution
recycle
recycling
refuse
rubbish
sanitation
sidewalk
storage
street
trash
ugly
urban
wall
waste