environmental
background
bag
building
concrete
debris
devastation
dirt
dirty
dump
dumping
ecological
ecology
environment
equipment
forest
garbage
grass
grassland
green
heap
illegal
industrial
industry
junk
junkyard
landfill
landscape
management
metal
nature
nobody
outdoors
park
pile
plastic
pollution
problem
processing
recycle
recycling
rubbish
scrap
spring
structure
suburban
trash
unhygienic
waste
wire