air
badge
barrel
bin
bio
care
clean
conservation
design
earth
eco
ecology
emblem
energy
environment
forest
garbage
globe
green
hand
icon
management
nature
organic
planet
plant
power
protect
radioactive
recycle
recycling
reduce
refuse
renewable
reuse
rubbish
save
solar
sort
sustainable
symbol
trash
tree
waste
water
wind
world