environmental
background
bad
bottles
broken
care
clean
concept
conservation
contaminated
contamination
damage
danger
destruction
dirt
dirty
disaster
dump
earth
eco
ecological
ecology
environment
garbage
glass
global
ground
land
litter
many
nature
outdoors
outside
pieces
polluted
pollution
prevention
problem
protection
rubbish
save
soil
spontaneous
trash
waste
world