environment crossword

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Across
  1. 2. (n)an organism that has two different alleles for a trait
  2. 7. (v) to keep from harm; to protect
  3. 8. (v) to be more important or valuable than something else
  4. 10. (v) to hold or keep
  5. 11. (n)something in which people or goods are transported
  6. 12. (n) the act of cutting down the trees in an area
  7. 13. (v) to lessen, diminish
  8. 15. (n) a substance that pollutes something
  9. 17. (adj) able to be created again
  10. 18. (adj) causing little or no damage to the environment
Down
  1. 1. (v) to make or become less
  2. 3. (n)fuel created from processed or refined biomass
  3. 4. (v) to continue; carry on; keep in existence
  4. 5. (adj) being effective without wasting time or effort
  5. 6. (v) to use up; waste
  6. 9. (adj) that cannot be changed back to what it was before
  7. 14. (adj)optional
  8. 16. (adj)extreme; severe