1
THE INTRODUCTION OF HARMFUL SUBSTANCES OR PRODUCTS INTO THE ENVIRONMENT
2
TO PROCESS USED OR WASTE MATERIALS SO AS TO MAKE SUITABLE FOR REUSE
3
THE ELEMENTS OF THE NATURAL WORLD, AS MOUNTAINS, RIVERS,,ANIMALS, ETC
4
VITAL LIQUID COMPOUND BY HYDROGEN AND OXYGEN.
5
THE SURFACE OF THE PLANET IN WHICH WE LIVE
