Across
- 5. phosphate which then dissolves in the water
- 6. the protective outer coat of a seed
- 10. A material that if added to plants helps them grow
- 12. Embryonic shoot with first leaves
- 15. An essential nutrient for growth and reproduction
- 17. Helps crops with their productivity
- 18. The process in which vitamins and minerals are absorbed
- 19. The process in which organic materials are decomposed
- 20. when phosphate rocks release phosphorus
Down
- 1. Useless or unwanted and lonely plants
- 2. To place in the ground to grow
- 3. Embryonic root
- 4. When nitrate is changed to nitrogen gas then returns to the atmosphere
- 7. a layer of material that forms with decaying materials such as dead bodies or decaying plants
- 8. A material which covers a percentage of the earth
- 9. Organic materials used to enrich the soil
- 11. When nitrogen from animal waste or dead bodies is returned to the soil as ammonia
- 13. When ammonia is converted to nitrite then nitrate
- 14. Process where an embryo changes to a seedling A very young tree
- 16. The process of gathering the crops