Ключевые слова: air, alternative, background, biodegradable, biofuel, black, carpentry, chip, chips, construction, copy, dry, dust, ecology, environment, falling, filings, firewood, flying, forest, heap, industrial, industry, levitation, lumber, material, mulch, natural, nobody, object, organic, pieces, pile, recycling, renewable, rough, saw, sawdust, shavings, space, sustainable, text, timber, tree, waste, wood, wooden, woodwork, yellow,