Across
- 4. Small hair like spikes found on leaves.
- 6. Yellowish substance in the soil that holds minerals very well.
- 8. Remains of animals, usually bones.
- 12. Process in which organisms with better traits survive, and others don't.
- 14. Large molecule that consists of many small molecules.
- 16. Found in some chemicals that plants release against their enemies.
- 17. Largest group of invertebrates.
- 18. Top layer of the soil.
- 19. Taxinomical rank under kingdom.
- 20. Every living organism is composed of _____.
Down
- 1. Control room of the cell.
- 2. Does the photosynthesis in a cell.
- 3. Creator of taxonomy.
- 5. Outer protection of a leaf.
- 7. Insects stuck in amber.
- 9. Sap storage in a cell.
- 10. Skeletal ___, Muscle ____, Nervous ____.
- 11. The pieces of the ecosystem
- 13. Strong material in bark
- 15. System of naming living organisms