Ключевые слова: aerogenerator, alternative, background, bio, biology, care, cleaned, concept, conceptual, delete, development, drawing, ecosystem, electricity, energy, environment, environmental, forest, friendly, garden, generator, green, industry, organic, paper, peaceful, pencil, planet, propeller, regard, remove, renewable, sign, sustainable, symbol, technology, tenable, text, thinking, turbine, wind, word,