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.
Noun [edit]. biohazard symbol (plural biohazard symbols). 1  A symbol that is universally recognized as a warning against substances that pose a threat to the health of living organisms, primarily that of humans.oun [edit]. biohazard symbol (plural biohazard symbols). 1  A symbol that is universally recognized as a warning against substances that pose a threat to the health of living organisms, primarily that of humans.