You should type the letters "slogans about environment" on Google and you would get what you require.
First aid slogans
There are many links online where one can find different safety slogans. One can find safety slogans with humor and with different themes. Some links even have more than 200 safety slogans to choose from.
short slogans on india
save trees go green.one man one treeglobal warming going harming
Without enviroment our life is like burden.
Got Stress? could be one.
yes i want telugu slogan for envornmental day
go to mathslogans.com i swear it is a awesome sight i think there is 144,300 slogans
earth is your life .so keep it clean
green revolution is the best solution to arrest the pollution
use paper bags and save earth
green green go green stop pollution for your grenery of environment