Across
- 1. ___ animals may soon disappear because there are very few now alive.
- 5. animals and plants that grow independently of people
- 6. Global ___ is a gradual increase in world temperatures.
- 9. the state of not having something anymore
- 11. a turtle that lives only on land
- 12. to use something again for a different purpose
- 13. all the living things in an area
- 15. relating to actions rather than ideas
- 18. the cutting down of trees in a large area
Down
- 2. They showed a ___ on animal communication.
- 3. the act of sending out gas, heat, light, etc.
- 4. A lot of wildlife is losing its natural ___.
- 7. The melting of ice caps leads to ___ sea levels.
- 8. in a way that is not allowed by law
- 10. the number and types of plants and animals that exist in a particular area
- 14. The President called for urgent action on ___ change.
- 16. Smoking can cause ___ diseases.
- 17. the time in the evening when the lights are switched off