Sarotmachik, which is no less than ten kinds are carcinogens and virtually all of the type substance that remains in the environment for a long time. Do not disintegrate easily.
Which contains not less than ten members of the carcinogen. And virtually all the substances that persist in the environment for long. Not decompose easily
Which are the members of no less than ten species that are carcinogens. And almost all kinds of compounds remain in the environment for a long time. Not dissolve easily.