Ключевые слова: background, bio, business, care, clean, climate, concept, conservation, day, development, earth, eco, ecology, ecosystem, energy, environment, environmental, forest, global, globe, grass, green, growth, hand, holding, human, leaf, life, light, map, nature, peace, person, planet, plant, protection, recycling, reusing, safe, safety, save, science, sphere, sunlight, sustainable, symbol, tree, warming, world,