10
arrows
battery
black
cad
cadmium
care
code
concept
conservation
cycle
design
dispose
eco
ecological
ecology
element
environment
graphic
icon
illustration
isolated
junk
logo
mobius
natural
ni
nicd
nickel
pictogram
pollution
product
protection
recycle
recycled
recycling
reuse
rotate
shape
sign
symbol
trash
triangle
triangular
waste
white