Ключевые слова: aquatic, aromatic, atomic, atoms, banned, benzene, bunt, cancer, carbon, carcinogen, carcinogenic, chemical, chemistry, chloride, chlorine, chloro, chlorocarbon, composition, compound, drawing, flat, formula, fungal, fungicide, hcb, hexa, hexachloride, hexachlorobenzene, hydrogen, icon, line, molecular, molecule, organic, perchlorobenzene, persistent, pollutant, pollution, seed, skeletal, structure, tumor, water,