Ключевые слова: beach, blue, botany, bottle, brown, capital cities, coastline, color image, container, danger, day, destruction, digitally generated image, dirty, drink, environment, environmental conservation, erosion, garbage, grass, greece, horizontal, industry, lake, landscape, marsh, moss, nature, no people, north america, outdoors, plant, plastic bag, poisonous, pollution, pond, quadcopter, quarry, sea, single object, social issues, summer, swamp, symbol, toned image, tourism, travel, warning sign, water,