Across
- 6. bird which lays the largest egg
- 7. mixture of decaying organic matter
- 8. destruction of forests
- 12. substance that repels or kills plant or animal pests
- 14. the driest biome
- 15. area designated to receive household garbage
- 17. largest plant family
- 18. fastest cat in the world
- 19. the wave energy released by earthquakes
Down
- 1. most abundant element found in air
- 2. underground layer of water-bearing permeable rock
- 3. opening in the earths crust from which lava flow
- 4. the worlds largest biome
- 5. substance that makes plant green
- 9. the worlds cleanest country
- 10. system comprising ecosystems and organisms
- 11. offspring of male donkey and female horse
- 13. any substance that evaporates quickly
- 14. extended period of no water
- 16. sweet liquid inside a flower
- 18. chemical substance contained in all plants and animals
- 19. mixture of smoke and fog