Ключевые слова: banner, caucasian, chemical, chemist, chemistry, child, childhood, concentrated, concept, copy space, day, earth, ecology, education, environmental, examining, experiment, garden, girl, glass, grass, green, hand, holding, kid, knowledge, lab coat, laboratory, leaf, learn, magnifier, magnifying, magnifying glass, nature, people, plant, preteen, schoolgirl, science, scientist, soil, spring, study, studying, tree, tubes, tuition, warming, white coat, world,