Ключевые слова: biological, biology, carbon dixoside, cleaner, conservation, earth, eco, ecologic, ecology, ecosystem, energy stabilizar, environmental, forest, fossil, friendly, global, globe, green, green living, hand, heart, holding, industry, inscription, leaf, living, message, nature, planet, plant, plate, population, problem, protection, recycle, reduce, responsibility, reuse, river, save, sustainability, sustainable, text, together, tree, voltage, world,