Across
- 1. It removes nutrients and minerals from soil
- 4. Percentage of the elements such as oxygen, silicon, and aluminium in earth's crust
- 5. This process decreases soil quality.
- 7. What does SOM stand for?
- 8. This element is used in plant cell wall synthesis
- 9. What is left after plant and animal tissues are not being decomposed?
- 10. The functions of SOM are classified in 2 groups, and this group provides nutrients for plants.
- 11. This process stops the natural nutrient cycle while the nutrients are removed permanently
- 13. What is usually use irrigation?
- 14. Using this slows down nutrient depletion
Down
- 1. What does PAH stand for?
- 2. What chemical ruins the soil?
- 3. What consists of 4 components: inorganic matter, water, air, and small amounts of organic matter?
- 6. It is the accumulation of water soluble ions or salts in the soil due to the growth of crops.
- 7. Poorly drained soils leave behind ____.
- 12. Source of this pollutant is pesticides, fertilizers, and growth hormones