Across
- 4. scale, 0-14
- 6. K
- 7. Na
- 10. the composition of the soil
- 13. an element that helps the crops grow
- 14. does not hold water well at all
Down
- 1. the top layer
- 2. underneath the topsoil
- 3. , carbon-based matter
- 5. level 7 on the ph scale
- 8. is a solid, dust-like sediment
- 9. ph level lower then 7
- 11. rotten eggs
- 12. sticky when wet
- 15. ph greater then 7