Across
- 2. performed to analyse the quality of soil
- 5. important for a sustainable world
- 7. used to dig up soil
- 8. insects found in soil which shows that the soil is healthy
- 9. the overall physical condition of soil
- 12. added nutrients to soil
- 13. can form in waterways when there are too many nutrients in soil
Down
- 1. natural fertiliser made from food scraps and decomposed plant material
- 3. clumps of soil
- 4. soil found just below the school
- 6. can be determined by the number of cracks or pores in the soil
- 10. where scientist test soil quality
- 11. a main nutrient in soil and has an atomic symbol of N