Across
- 2. The green stuff found in plants
- 5. Chemical fertilisers contain these
- 7. This gas is needed by plants to make food
- 8. Aquatic plants underwater also need ...
- 12. Phosphorus and nitrogen in water causes ... bloom
- 14. This is a weed killer
- 17. We eat in order to ...
- 20. This type of paper used to tell how acidic or alkaline
- 23. Non-chemical fertilisers are also called ... fertilisers
- 24. This method grows plants in a mist of nutrients
- 25. Natural fertilisers
- 26. When trees are removed, soil is affected and this leads to
- 27. burning of trees lead to ...
- 28. Litmus paper change to this colour in acids
- 29. In the slash and burn method, ... help fertilise the ground
Down
- 1. Plants grown for food are called ...
- 3. Process ofmaking food by plants
- 4. This gas is given out by plants when making food
- 6. This chemical to kill insects affects the environment
- 9. When forest are removed, homes or ... of animals are destroyed
- 10. This method involves cutting down of trees
- 11. Comprises cheese, milk, butter
- 13. The natural ... of rats are snakes
- 14. This metho grows plants without soil
- 15. Chemical fertilisers affect ... life
- 16. Farmers use ... to control temperature, water and nutrient supplies
- 18. Plant ... can be used to kill weeds
- 19. This indicator changes to many colours based on pH
- 21. plants make food in the sun to produce
- 22. Food provides us with ...