Across
- 2. The center of the earth made up of lava
- 5. the impact of a person or community on the environment
- 7. Materials or substances such as minerals, forests, water, and fertile land that occur in nature and can be used for economic gain
- 8. The rigid outer part of the earth, consisting of the crust and upper mantle
- 9. The science or practice of farming, including cultivation of the soil for the growing of crops and the rearing of animals to provide food
- 10. Is how biological systems remain diverse and productive
- 12. The variety of life in the world or in a particular habitat or ecosystem
- 13. The outermost layer of a planet
- 14. Are pieces of the Earth's crust and uppermost mantle
- 16. The layer of the earth's atmosphere above the troposphere
- 19. Any of the almost spherical concentric regions of matter that make up the earth and its atmosphere
Down
- 1. Environmental change has occurred through- out Earth’s history
- 3. The process of eroding or being eroded by wind, water, or other natural agents
- 4. The interior of the earth
- 5. Is an interdisciplinary study of human interactions with the living and nonliving world
- 6. The lowest region of the atmosphere
- 11. The upper layer of the earth's mantle, below the lithosphere, in which there is relatively low resistance
- 15. A mixture of nitrogen,oxygen,and other gases that surrounds Earth
- 17. A colorless unstable toxic gas with a pungent odor and powerful oxidizing properties
- 18. The presence in or introduction into the environment of a substance or thing that has harmful or poisonous effects