Final answer:
Biohazardous materials are biological agents that risk infection and can cause disease. They must be handled with care in a laboratory setting, following safety guidelines such as sterilization by autoclave before disposal. The management of such hazardous materials is regulated to protect health and the environment.
Step-by-step explanation:
When a material is described as biohazardous (infectious), it refers to any biological material that poses a risk of infection and could potentially cause illness. An example would be a used needle that may contain blood infected with disease-causing organisms. Likewise, bacteria cultivated in a laboratory can be considered biohazardous if they have the potential to cause diseases in humans.
In the context of scientific research and laboratory work, it is crucial to identify and handle biohazardous materials appropriately. The international symbol for biohazards is used to signal the presence of such materials, and specific protocols, like the use of an autoclave to sterilize biohazard waste before disposal, are followed to ensure the safety of personnel and the environment.
Hazardous wastes include materials that have toxic, corrosive, flammable, or reactive properties as characterized by the US Environmental Protection Agency (EPA). Correct management of these wastes encompasses a variety of processes including recycling, treatment, storage, and disposal to mitigate their impact on human health and the environment.