Across
- 2. things we get from nature that people use (like water, wood, or energy)
- 5. a black rock that people burn for energy
- 6. the activity of taking materials from under the ground
- 7. natural substances in the ground, like gold or salt
- 8. a thick liquid from the ground used for fuel
Down
- 1. making deep holes in the ground to find oil or gas
- 3. to take something out, especially from the ground
- 4. to save something and not waste it
- 5. to have something inside
- 7. when something solid becomes liquid because of heat