Across
- 5. changing color to adapt
- 7. attachments of plant specimen
- 8. usable form of nitrogen in plants
- 11. found in animal dung
- 12. constant body function
- 15. plants library
- 16. fleshy stem
- 19. interaction of organism with Environment
- 20. group of same species
- 21. primary source of energy
Down
- 1. can make food
- 2. place where an organism lives
- 3. found in cigar
- 4. surrounding of organism
- 6. sheep of desert
- 9. non living component
- 10. found in organic molecules
- 13. prevent ultraviolet rays
- 14. 3rd step of N2 cycle
- 17. feed dead organisms
- 18. position in food chain