Ключевые слова: agriculture, arrow, biofuels, biomass, carpentry, climate change, concept, cross section, deforestation, design, ecosystem, environment, environmental conservation, environmental issues, environmentalism, flower, forestry, grass, green, green technology, growth, industry, leaf, log, lumber, material, meadow, message, natural, natures, recycled material, recycling, recycling symbol, reforestation, renewable energy, responsible business, reusable, shape, sign, single tree, sky, sustainable lifestyle, sustainable resources, symbol, timber, tree, trunk, wood, wooden, zero waste,