Ключевые слова: abstract, actual, america, background, change, climate, clipart, color, composition, concept, conceptual, contamination, contrast, curves, day, design, drip, earth, ecology, effect, element, environment, environmental, global, globe, glossy, graphic, green, heat, hot, icon, illustration, leave, lines, map, melt, nature, night, ozone, planet, poster, save, shine, style, symbol, warming, warning, weather, world,