Ключевые слова: animal, black, climate, cloud, coal, contour, dead, earth, energy, environment, environmental, factory, fire, fishing, food, fuel, global, globe, graphic, grizzly, head, hot, icon, illustration, industrial, industry, isolated, line, linear, nature, ocean, outline, petroleum, planet, plant, polar, predator, sea, set, sky, station, symbol, weather, wild, wildlife, world,