Ключевые слова: abstract, background, banner, bio, biology, cloud, conservation, earth, eco, ecological, ecology, ecosystem, energy, environment, environmental, forest, friendly, garden, go, grass, green, growth, hand, hold, idea, illustration, leaf, letter, mountain, natural, nature, paper, planet, plant, postcard, poster, protection, rain, responsibility, save, savings, spring, sun, sunny, template, think, together, tree, world,