Ключевые слова: background, bio, care, clean, concept, conservation, day, development, earth, earth day, eco, ecology, energy, environment, environmental, forest, fresh, friendly, glass, global, globe, grass, green, growth, hand, holding, leaf, life, map, moss, natural, nature, people, planet, plant, protect, protection, recycling, responsibility, save, seedling, social, soil, space, sphere, sunlight, sustainability, sustainable, tree, world,