Ключевые слова: analyzing, bacterium, beaker, caucasian, chemical, chemistry, coveralls, danger, dirty, environment, environmental conservation, environmental damage, environmentalist, equipment, expertise, flask, forest, garden, glasses, green, holding, human hand, insecticide, looking at camera, one person, one woman only, only young women, outdoors, pest, pollution, probe, protective eyewear, protective glove, protective suit, protective workwear, purity, quarantine, reagent, research, science, scientific experiment, scrutiny, test method, test tube, toxic substance, transparent, unhygienic, washing up glove, water, water pollution, water sample, white, women,