What is defined as a "biological hazard"?

A biological hazard refers specifically to any biological agent, such as bacteria, viruses, fungi, or other microorganisms, that can cause harm or disease to humans, animals, or plants. This definition emphasizes the potential risks posed by living organisms that can lead to infectious diseases, allergies, or other health-related issues. The focus is on the pathogenicity or toxicity of these biological agents, which distinguishes them from other types of hazards.

Understanding biological hazards is crucial in various fields, including public health, agriculture, and environmental safety, as it informs necessary precautions and safety measures to mitigate risks associated with exposure to these agents. The other options pertain to different types of hazards, such as chemical, radioactive, or physical hazards, which do not apply to the definition of a biological hazard.