Tell me five slogans on conservation of natural vegetation.

1. Earth provides enough to satisfy every man's needs, but not every man's greed.
                                                                                - Mahatma Gandhi
2. Nature is not a place to visit. It is our home.
                                              - Gary Synder
 3. I really wonder what gives us the right to wreck this poor planet of ours.
                                                                         - Kurt Vonnegut
4. Water and air, the two essential fluids on which all life depends, have become global garbage cans 
                                                                                  - Jacques Yves Costeau

5. The oceans are the planet's last great living wilderness, man's only remaining frontier on Earth, and perhaps his last chance to prove himself a rational species.
                                                                    - John L. Culliney

Ibelieve it was because of the gas act in order to preserve fuel 

Canada and