Ключевые слова: background, bio, biology, brown, care, clean, closeup, concept, conservation, day, design, development, earth, eco, ecology, ecosystem, energy, environment, environmental, forest, global, globe, green, growth, hand, life, map, natural, nature, organic, planet, plant, protect, protection, safety, save, sick, sphere, spring, sprout, stethoscope, sustainable, symbol, treatment, tree, wooden, world,