This image means...
... recycle.
This image means...
... pollution.
This image means...
...waste energy
This image means...
... protect the enviroment.
This image means...
... switch off the lights.
This image means...
... save water.
This image means...
... climate change.
This image means...
... pick up rubbish.
This image means...
... global warming.
This image means...
... plant trees.
This image means...
... use renewable energy.
This image means...
... destroy the rain forest.