1) lend a hand to save trees.
2) plant more trees,save wildlife
3) every part of world is green if every heart of human is green
4) killing trees is killing us

.We Were Born to help the World,Not to Destroy it,Then Why we are Destroying the Environment?
2.Only when the last tree has died, the last river has been poisoned and the last fish has been caught, will we realize that we cannot eat money?
3.There is a sufficiency in the world for man’s need, but not for man’s greed.
it will used to increase the rain fall
1.Don’t destroy the greenery and don’t spoil the scenery. Save mother earth.
plant a tree, plant a tree, so that next generation can get air for free
Don’t make Trees rare, we should keep them with care
here is enough on the earth for the human’s need but not for the human’s greed.

I think the 3rd and 4th one is the best...
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