Ключевые слова: abstract, agriculture, backdrop, backgrounds, black color, black earth, closeup, dark, dirt, dirty, dry, dust, environment, flame, fossil fuel, fuel and power generation, geology, gray, heap, heat, industry, land, landscape, material, mining, mud, nature, no people, object, organic, outdoors, pattern, pollution, rock, rough, selective focus, silt, soil, stone, summer, surface level, temperature, tinted,