Ключевые слова: biological, biosphere, carbon, conservation, culture, disposal, eco, ecofriendly, ecological, ecology, ecosystem, effect, engineering, environment, environmental, environmentally, footprint, footstep, friendly, gases, global, greenhouse, grow, growth, human, impact, impression, nature, organic, organisms, planer, pollution, protection, recycle, recycling, reduce, renew, renewable, resources, stylized, sustainability, sustainable, symbol, warming, waste,