Across
- 2. A substance added to soil to increase its nutrients
- 3. Gas needed for photosynthesis
- 5. The soil contains these for healthy growth of the plants
- 7. Gas produced during photosynthesis
- 9. A solution that turns Universal Indicator red
- 11. Green pigment found in leaves
- 13. Excess chemical fertilisers can contaminate this
- 15. The rapid growth of algae
Down
- 1. Chemical fertilisers are rich in this element
- 4. Amount of crops produced
- 6. Excess sugar is converted to this for storage in plants
- 8. Process whereby plants make food
- 10. Decomposed plant material
- 12. A solution that has pH 7
- 14. Litmus paper turns blue in this condition