Environmental health, principles and issues; basic principles of toxicology; Principles of toxic action of chemical substances; Dose response relationships; Exposure pathways, metabolism and storage of toxic substances; Carcinogenicity, mutagen city & teratogenicity; Immune system & reproductive defects, Methods of estimating exposure; physiologic health effects of toxicants, food related diseases, Housing and hazards of poor housing, Microbial agents of exposure and ionising radiation, legal systems in Environmental health, Public Health Act; EMCA