unit 5

4. a tree that bears cones and needle-like or scale-like leaves that are typically evergreen.
6. a biofuel intended as a substitute for diesel
7. the wood from a broadleaved tree (such as oak, ash, or beech) as distinguished from that of conifers.
10. a scientist who studies how animals and plants interact with their environment
11. of or relating to a substance that has an affinity for oils and not for water
13. is the science or practice of planting, managing, and caring for forests
14. used to cut brush, briar, and undergrowth
16. a person who fells trees for timber; a lumberjack

1. an area of land that channels rainfall, snowmelt, and runoff into a common body of water
2. the modification of the environment to stimulate existing bacteria that are capable of pollutant degradation
3. a place in which the land is covered by water—salt, fresh, or somewhere in between—either seasonally or permanently
5. a person in charge of a forest or skilled in planting, managing, or caring for trees
8. wild animals collectively; the native fauna (and sometimes flora) of a region
9. an instrument used for measuring the angle or elevation of slopes
12. a ravine formed by the action of water
15. relating to humidity or its measurement