Ключевые слова: 4, abstract, air, alternative, art, blue, chart, circle, concept, construction, creative, design, drops, earth, eco, ecology, element, elements, energy, environment, environmental, fire, flame, four, four elements, graphic, green, icon, illustration, infographic, insulation, isolated, leaf, life, marquise, modern, natural, nature, orange, plant, presentation, set, shape, sign, sources, symbol, turbine, water, wind,