Natural resources
Across
- 2. It has four types
- 4. Substances which causes pollution
- 7. A cycle with move meant of water
- 8. movement of nutrients biotic and abiotic
- 12. Breaking down of glucose to release energy
- 13. A gas that omits and obsorbs UV rays
- 15. when nitrogen is changed to it’s componds
- 16. used in industries to make fertilizers
- 20. a process used by plants for intake of food
Down
- 1. A cycle by which carbon is used and given
- 3. H2O
- 5. gas that is required by humans to survive
- 6. Process of rotting or decaying
- 9. gas that is required by plants to survive
- 10. it is when substances react to form heat
- 11. Present everywhere in the atmosphere
- 14. Powdered rocks
- 17. cycle Refers to movement of oxygen
- 18. It helps to change nitrogen
- 19. When the environment is damaged