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