Ключевые слова: abstract, air, background, biology, breath, cancer, chest, clean, clean air, climate, climate change, climate control, concept, creative, day, disease, earth, eco, eco friendly, ecological, ecology, environmental, forest, global warming, green, health, healthy, landscape, leaf, lung, lung forest, lung of earth, lungs, mountain, natural, nature, oncology, organ, planet, pollution, problem, protect, protection, respiratory, save, sun, symbol, tobacco, tree, world,