Question

which of the following is an example of a biological hazard?
heavy metals
extreme weather
noise pollution
pathogenic bacteria

Explanation:

Biological hazards involve living organisms. Pathogenic bacteria are living microbes that can cause harm. Heavy metals are chemical hazards, extreme weather is a physical/environmental hazard, and noise pollution is a physical hazard. Only pathogenic bacteria fit the biological hazard category.

Answer:

D. pathogenic bacteria