Forest Cycle

3. It's an essential step before growing crops or sowing a seed.
6. The process of increasing in size.
8. To put a seed in the earth.
10. An engineering discipline comprising the production of forest products, such as pulp and paper, or construction materials.
12. A factory in which logs are sawn into planks or boards by machine.
16. A perennial plant with an elongated stem, or trunk, usually supporting branches and leaves.
17. The growing and cultivation of trees.
19. Well-managed forests last forever and involve: plant, grow, fell, plant, grow, fell.
20. The geological process in which earthen materials are worn away and transported by natural forces such as wind or water.

1. Putting (a seed, bulb, or plant) in the ground so that it can grow.
2. A young plant, especially one raised from seed and not from a cutting.
4. The process by which some organisms replace or restore lost or amputated body parts.
5. A complex ecological system in which trees are the dominant life-form.
7. The movement of air, caused by the uneven heating of the Earth
9. The process of cutting down trees, an element of the task of logging.
11. The organic and inorganic materials on the surface of the earth that provide the medium for plant growth.
13. Partial removal of trees is used for a variety of commercial and non-commercial purposes.
14. The development of a plant from a seed or spore after a period of dormancy.
15. To trim (a tree, shrub, or bush) by cutting away dead or overgrown branches or stems, especially to encourage growth.
18. Any dead, woody plant material, including logs, branches, standing dead trees, and root wads.