bag
ball
blue
clean
concept
container
contamination
copy
copyspace
danger
day
destruction
dirty
dump
earth
eco
ecological
ecology
ecosystem
environment
environmental
garbage
global
green
industrial
life
nature
object
ocean
planet
plastic
pollution
polyethylene
problem
protect
protection
recycle
recycling
reuse
rubbish
save
sea
sphere
symbol
toxic
trash
waste
water
white
world