blue
bottle
chemical
coast
conservation
damage
danger
dirt
dirty
disaster
dump
ecological
ecology
environment
environmental
floating
garbage
global
global warming
grass
green
industrial
industry
junk
lake
landfill
natural
nature
oil
piece
plastic
pollute
polluted
pollution
pond
problem
protection
recycle
recycling
rubbish
sea
smell
trash
unhygienic
urban
water