Across
- 4. a glass shelter for plants that absorbs sunlight
- 6. humus is present in ___
- 8. many or alot
- 11. exhalation of water vapour through stomata
- 12. a layer in the stratopshere
- 13. what plants do at night
- 15. variety of plants and animal life in the world or a particular area
- 17. a must
- 19. _______ and component
- 20. a substance that pollutes something
Down
- 1. animals living on the ground are known as _____ animals
- 2. explosion
- 3. a component
- 5. the biosphere is made of lithosphere, hydrosphere, and _______
- 7. what organisms do in the soil to dead matter
- 9. and inorganic substance that occurs naturally
- 10. living things
- 14. when something is floating that thing is _____
- 16. what we breathe
- 18. something we need to do work