Across
- 5. An increase in the earth's average atmospheric temperature.
- 9. The clearing of a forest or other wooded area.
- 12. The aggregate of surrounding things, conditions, or influences.
- 15. Make or become liquefied by heat.
- 17. Are materials from the Earth that are used to support life.
- 18. Any of the large bodies that revolve around the sun in the solar system.
- 19. A great flow of water or of something that overwhelms
- 20. Is a specie that is in danger of becoming extinct.
Down
- 1. A fire very quickly in area that is not controlled.
- 2. Are weather conditions of a region, as temperature, pressure, etc.
- 3. An instance of spending resources without care or restraint
- 4. An amount of vapor that smells strongly or is dangerous to inhale.
- 6. Is the existence of a wide variety of plant and animal species.
- 7. Officially or legally prohibit
- 8. A large tract of land covered with trees.
- 10. In biology, the dying out or extermination of a species.
- 11. Prevent
- 13. A series of vibrations induced in the earth's crust by the abrupt rupture.
- 14. Are grouped together because they have something in common
- 16. To put the ground to grow
