Across
- 3. poem good-bye.
- 6. increased in agricultural productivity.
- 10. annual high trips.
- 12. explosion in the Gulf of Mexico
- 13. doctrines of transcendentalism.
- 16. groundwater pollution in niagara falls.
- 17. world nature organization.
- 18. the world first vaccine.
- 19. promoted conservation moment.
- 20. microcredit.
Down
- 1. ecological movement by rural villagers.
- 2. vice president Usa enviromental.
- 4. land and farm
- 5. try to stop us nuclear weapons.
- 7. anniversary of the birth of the modern environmental movement
- 8. nobel medicine 1908
- 9. fight for peace.
- 11. Lethal smog that covered the city of London.
- 14. third international conference on sustainable development
- 15. international union for conservation of nature.