environmental
background
bin
blue
bottle
box
can
clean
color
colorful
conservation
container
dirty
discard
disposal
dump
dustbin
eco
ecology
environment
garbage
global warming
green
management
metal
natural
nature
object
outdoor
paper
park
plastic
pollution
protect
protection
recycle
recycling
red
reduce
refuse
reuse
row
rubbish
symbol
throw
trash
urban
waste
yellow