Across
- 1. Nutrient-rich substances used to improve soil characteristics
- 3. Chemical substances dissolved in soil moisture, necessary for the normal growth and development of plants
- 9. particles defined by the way individual particles of sand, silt and clay are grouped together.
- 10. varying states of descomposition
Down
- 2. mostly microscopic but incluiding insects
- 4. contain amount types of nutrients in solution
- 5. soilless agriculture
- 6. when elements or substances enter an environment that should not normally be present and affect the balance of the ecosystem.
- 7. the material composed for clay , silt and sand
- 8. increase something in size