Across
- 1. The fuel which is formed from dead living organisms
- 4. The natural resource which deplete after sometime.
- 6. The resource which either derived from nature or made in laboratory
- 8. The process of conversion of organic matter into coal.
- 9. The factor responsible for carbonisation.
- 10. An example of exhaustible natural resource.
Down
- 2. The natural resource which does not deplete.
- 3. An example of inexhaustible natural resource.
- 5. The high pressure gas formed after burning coal.
- 7. The resource which is present in nature and used as it is.