Ключевые слова: abstract, backdrop, background, beach, chemical, cleanup, coastline, concrete, damaged, danger, design, dirt, dirty, drainage, dregs, dust, environment, garbage, leavings, material, mud, natural disaster, nature, ocean, old, pattern, plant, plastic, pollute, polluted, pollution, reflection, rubbish, rubble, sewage, sewage treatment plant, stained, stone, substance, surface, texture, toxic substance, trash, treatment, tropical climate, unhygienic, wall, wallpaper, waste, wave,