coal and petroleum

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