Across
- 2. used to produce heat
- 5. conversion wood into coal
- 6. wise use of resources
- 8. has 96 carbon contant
- 9. passing steam over white coke
- 10. 65 percent of carbon
Down
- 1. passing red hot coke
- 2. components of different boiling
- 3. oil boiling point 250-350C
- 4. used by plant to make food
- 7. resource that will neverrunout