Across
- 1. Need it to survive
- 3. You breath it
- 5. From your parents
- 7. Where animals and humans live
- 9. Atmosphere
- 10. Comes from decaying plants
- 13. Smoke or dust clouds
- 17. Place to grow plants
- 18. Square
- 19. Plats also produce
- 20. anything living
Down
- 2. Radiation
- 4. Physical looks
- 6. Control pest
- 8. Eat plants or animals
- 11. Plants produce it
- 12. Genetic makeup
- 14. Breath
- 15. Living organism
- 16. Pollutant from gas engines