Ключевые слова: arctic, art, automobile, barrel, climate, color, colorful, container, contour, crack, damage, desert, disaster, drop, dry, dustbin, earth, factory, forest, fuel, garbage, gas, gasoline, ground, ice, iceberg, icon, industry, isolated, line, linear, measurement, nature, news, oil, outline, petroleum, planet, pollution, pop, popart, reporter, set, soil, transportation, tv, vehicle, warming, water,