Ключевые слова: background, background material, blue sky, circumstance, colorcolour, combined, composite, composition synthesis, compound, eco, ecology, ecology image, emptiness, environ, environment, foliage, fresh vegetation, grass, grassland, green, herb, leaf, leaves, material, mixed, nature, new green leaves, new leaves, plant, prairie, savanna, savannah, scenery, setting, sky, steppe, surroundings, synthetic, synthetical, vegetation, verdure, young leaves,