Across
- 2. the process by which heat or electricity is directly transmitted
- 3. the upper layer of the earth's mantle
- 6. effect the trapping of the sun's warmth
- 10. the variety of life in a particular habitat or ecosystem
- 11. regions of matter that make up the earth
- 13. the envelope of gases surrounding the earth
- 16. plates the two-sub layers of the earth's crust that move
- 19. deals with the relations of organisms
Down
- 1. the lowest region of the atmosphere
- 4. the layer of the earth's atmosphere
- 5. practice of farming
- 7. resource materials or substances such as minerals,forests,and water
- 8. destruction
- 9. the rigid outer part of the earth
- 12. the emission of electromagnetic waves
- 14. interior of the earth between the core
- 15. a substance that is harmful that goes into the environment
- 17. outermost layer of a planet
- 18. the central region of the earth