Question

slogan on save trees

Answer 1

Save Tress,Save Lives.................A plant  keeps the flood away.......Trees are  gold.

Answer 2

Don't destroy the greenery and don't spoil the scenery.
                                  OR
Save the trees, save the earth. We are the guardians of nature's birth.
                           OR if it doesn't work
A plant a day keeps the flood away.
hope it helps you :)