Across
- 3. best soil to grow plants
- 5. green colour pigment of plant
- 6. largest planet in solar system
- 9. thick layer around earth
- 12. pattern of stars
- 13. planting of trees
- 15. house on wheel
Down
- 1. rise in average temprature
- 2. stagnant water breed
- 4. harmful substances into the environment
- 7. animal eat only plant
- 8. changes in weather
- 10. natural source of energy
- 11. movement from one place to another
- 13. white portion of egg
- 14. extra food of plant