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Computer viruses () Environment (J) Related Term (Associative): Computer viruses (); Areas and regions (V) Environmental phenomena (Jb) Living things (Jc) Use For: Organisms Related Term (Associative): Biology (Tpd) Cells (Biology) (Jca) Classes of living things (Jcb) Living things by characteristics (Jcm) Biological activity (Jd) Ecosystems (Je) Environmental quality (Jf) Natural resources (Jn) Use For: Earth resources; Resources