vocabulary crossword

3. natural accumulations of minerals
4. forest that has regenerated through largely natural processes after human-caused disturbances
7. Removing a mineral deposit from the Earth after first removing the layer of earth above it
12. rock or soil overlying a mineral deposit
15. metal elements are present in their raw form
16. harvesting trees in a way that moves a forest stand towards an uneven-aged or all-aged condition
18. cut down and remove every tree
19. the residue of something, especially ore
20. surface mining at the summit or summit ridge of a mountain

1. underground mining where shafts are pushed vertically
2. clearing a wide area of trees
5. obtaining coal
6. making decisions to best achieve ownership objectives while maintaining an uneven- aged structure
7. regenerating new forest stands by harvesting all mature trees in an area
8. growing and cultivation of trees
9. practice of planting, managing, and caring for forests
10. naturally occurring solid material
11. tree farms
13. valueless material in which ore is found
14. establishing native or non-native plants, often with the main aim of reducing erosion
17. forests that have developed over a long period of time, essentially free from catastrophic disturbances