Across
- 3. Scientist use these to find rock that contains petroleum.
- 6. These help decompose organic material.
- 10. Scientists use these to find and monitor fault lines.
- 13. These instruments allow scientists to see underwater.
- 14. These can be found in oceans.
- 15. Gardeners improve soil with this.
Down
- 1. These people study forces that create mountains.
- 2. Hydrologists measure this type of water.
- 4. These scientists study air pollution.
- 5. Farmers plant crops to prevent this.
- 7. These type of geologists study the ocean floor.
- 8. Scientists use these to determine when a volcano might erupt.
- 9. minerals, soil, and fossil fuels are this type of resource.
- 11. Seismologists use these to alert people to earthquakes.
- 12. The prefix geo means this.