A veneer is over a less expensive wood, e.g., black walnut, mahogany, teak. In industrialized world, about half of harvested wood turned into pulp with most of that for paper. The idea here is to separate lignin from the wood to create a cellulose product. Overall, there is little replanting and thoughtful management of overall forest resources being done. Sustainable approaches to forestry include leaving enough ecosystem intact for a semblance of the forest to continue, not just perform large patches of clear-cutting.
Fire dominates the history of the forests, grasslands, and chaparral communities.
Sulfur and nitrogen oxides are converted into sulfuric and nitric acids that can precipitate down and adversely affect trees.