Across
- 4. Relating to or produced by the internal heat of the earth.
- 6. A small cavity in rock lined with crystals or other mineral matter.
- 8. The branch of biology that deals with the relations of organisms to one another and to their physical surroundings.
- 9. An apparatus consisting of a tube attached to a set of mirrors or prisms.
- 10. Study Of Earth.
Down
- 1. The outline/border of something.
- 2. An instrument on a vehicle's dashboard indicating its speed.
- 3. The scientific study of the behavior, structure, physiology, classification, and distribution of animals.
- 5. Study Of Myths.
- 7. A device that automatically regulates temperature.