Ключевые слова: abstract, air, anatomy, art, background, biology, branch, breath, breathe, cancer, clean, concept, conceptual, day, design, earth, eco, ecology, environment, environmental, forest, grass, green, health, healthy, human, illustration, isolated, leaf, life, lung, man, medical, medicine, natural, nature, organ, oxygen, plant, protection, respiratory, save, shape, shaped, symbol, tree, white,