many states offer esl as a primary endorsement such as oklahoma english as a second language p 12 connecticut tesol pk 12 and washington d c english as a second language for public school teachers other states that do not offer esl as a primary endorsement offer esl as an add on endorsement
Definition of biohazard. : a biological agent or condition that is a hazard to humans or the environment; also : a hazard posed by such an agent or condition.
biochemistry. noun. 1  The study of the chemical substances and vital processes occurring in living organisms; biological chemistry; physiological chemistry. 2  The chemical composition of a particular living system or biological substance: viral biochemistry.