Across
- 2. Those parts on the outside of a body or structure.
- 3. A deep valley in ocean floor.
- 4. age The age of one thing compared to another.
- 6. Describes a kind of thing that is no longer found on Earth.
- 9. An earth process that threatens to harm people and property.
- 11. The remains or traces of an organism that lived long ago.
- 14. Materials found in nature that people and other living things use.
- 16. One of the seven largest land areas on Earth.
- 17. An area of land that is very dry.
- 18. A group of parts that work together to do a job for the body.
- 20. The remains or traces of an organism that lived on land long ago.
- 22. Any material that can be used to satisfy a need.
- 23. The breaking down of rocks on Earth’s surface into smaller pieces.
- 24. A resource that can be replaced within a reasonable amount of time.
- 25. The dropping or settling of eroded materials.
- 26. The height of land above sea level.
Down
- 1. Those parts on the inside of a body structure.
- 5. The remains or traces of an organism that lived in water long ago.
- 7. Waste products that damage an ecosystem.
- 8. A disadvantage or problem.
- 10. A dense forest found in regions with high heat and heavy rainfall.
- 12. The part of a map that compares a distance on a map to distance in real world.
- 13. Special structures that send information about the environment from different parts of the body to the brain.
- 15. A body part that is made of smaller parts that work together to do a certain job.
- 19. A resource that once used cannot be replaced in a reasonable amount of time.
- 21. The process of moving sediment from one place to another.