Ключевые слова: 3d, alternative, backdrop, banner, cartoon, clean, composition, concept, conservation, dam, design, eco, ecology, ecosystem, electricity, energy, environment, flat, friendly, futuristic, gradient, green, idea, illustration, industry, isolated, isometric, layout, modern, natural, nature, panel, plant, poster, preservation, protection, renewable, solar, source, station, sustainable, technology, template, text, tree, turbine, typography, water, wind,