Ключевые слова: background, bio, blue, business, care, concept, conceptual, conservation, day, development, earth, eco, ecology, education, energy, environment, environmental, female, flower, forest, friendly, global, globe, green, growth, hand, hold, holding, human, idea, life, map, nature, peace, person, planet, protect, protection, responsibility, save, social, sustainability, sustainable, symbol, woman,