Across
- 2. THE NATURAL WORLD AROUND US
- 4. THE CHANGE FROM ONCE FERTILE LAND INTO DESERT
- 5. SOMETHING THAT CAN BE DECOMPOSED BY NATURAL BIOLOGICAL PROCESSES
- 8. INTRODUCTION OF HARMFUL MATERIALS INTO THE ENVIRONMENT
- 9. THE EFFECT OF GASES TRAPPED IN THE ATMOSPHERE
- 10. DESTRUCTION OF WOODS AND FORESTS TO MAKE LAND FOR FARMING
- 11. A GRADUAL INCREASE OF THE TEMERATURE (two words)
- 12. MAKE UNCLEAN AIR, WATER, ETC
Down
- 1. ANIMALS IN DANGER OF BECOMING EXINCT
- 3. A MEASURE OF THE EFFECT THAT HUMAN ACTIVITIES HAVE ON THE CLIMATE
- 6. LOCATION WHERE GARBAGE, RUBBISH AND WASTE IS TAKEN WITHOUT CONTROL
- 7. CHANGES IN WEATHER (TWO WORDS)