Across
- 6. When a species of animal ceases to exist
- 10. Another term for 'different'
- 13. The severe lack of something
- 14. The general direction in which something is developing or changing
- 15. A species of plant or animal that is at serious risk of extinction
- 16. The mass chopping down of trees
- 18. Rich or abundant, often relating to plantlife
- 19. Another word for plantlife
- 20. The opposite of deep
Down
- 1. The protection of nature from harmful human activity
- 2. Made impure by exposure to pollutants
- 3. To deplete the stock of fish in a body of water
- 4. The term for animals that live in water
- 5. The seasonal movement of a group of animals from one place to another
- 7. A journey via boat or ship
- 8. Africa's famous large antelope
- 9. Relating to the Earth or dry land
- 11. A group of mammals that includes mice, squirrels, rats, etc.
- 12. Existing as a part of a tradition
- 17. The natural home or environment of an animal in the wild