Five features of emerging adults. As Arnett describes it, emerging adulthood can be defined as an: Age of identity exploration. Young people are deciding who they are and what they want out of work, school and love. Age of instability.
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.
molecâ²ular biolâ²ogy. the branch of biology that deals with the nature of biological phenomena at the molecular level through the study of DNA and RNA, proteins, and other macromolecules involved in genetic information and cell function.