Ключевые слова: aerial, air, atmosphere, azure, backdrop, background, beautiful, beauty, blue, carbon, change, chemical, clean, climate, cloud, clouds, cloudscape, cloudy, co2, color, commitment, concept, conservation, contamination, control, cumulus, damage, danger, day, daylight, daytime, dioxide, disaster, eco, ecology, effect, emissions, energy, environment, environmental, fluffy, formula, freedom, gas, global, greenhouse, heaven, high, idyllic, illustration, industrial, industry, meteorology, natural, nature, outdoors, outside, oxygen, ozone, pattern, peaceful, picturesque, plant, pollution, scenery, scenic, sign, sky, smog, smoke, space, sunny, symbol, technology, toxic, tranquil, view, wallpaper, warming, weather, white,