Ключевые слова: adult, analyzing, biology, blue, bottle, closeup, damage, danger, day, dirt, dirty, discovery, drop, environment, environmental, equipment, glove, gloves, hand, holding, human, industry, landscape, liquid, medicine, men, nature, occupation, one, outdoors, person, plastic, pollution, protective, research, sand, science, scientist, shore, summer, syringe, technology, travel, tube, unhygienic, water, women, working,