Ключевые слова: adult, analyzing, beaker, biology, body part, chemical, chemistry, closeup, color image, container, day, dirt, discovery, document, environment, equipment, examining, expertise, full frame, galicia, geology, germany, high angle view, horizontal, indoors, jar, laboratory, liquid, measuring, microbiology, mud, nature, no people, occupation, one person, opportunity, people, poisonous, pollution, pushing, research, science, scientist, selective focus, spain, suitcase, technology,