blue
conservation
consumerism
damage
day
destruction
dirt
dirty
disposal
dump
earth
ecology
environment
environmental
garbage
global
heap
industrial
industry
junk
landfill
landscape
litter
nature
old
outdoors
pile
plastic
pollution
recycle
refuse
rubbish
rust
rusty
scrap
scrapyard
site
sky
stack
toxic
trash
warming
waste
yard