Ключевые слова: bio, biological, black, caption, circle, design element, distress, eco, ecology, electric generator, electricity, energy, environment, farm, flat, generate, generator, green, green energy, green power, grist mill, grunge, healthy, icon, mill, natural, nature, organic, power, power supply, red, rounded, rubber, seal, sign, spin, stamp, symbol, technology, texture, watermark, wind energy, wind generator, wind power, wind turbine, windmill, windy, wings,