Substances that pose ______ hazards include those that may be irritating, corrosive, sensitizing or toxic.

Substances that pose health hazards are those that can affect a person's well-being and physical condition through various means. These substances can cause irritation to the skin or respiratory system, corrosion that damages body tissues, sensitization that leads to allergic reactions, or toxicity that can lead to serious health issues. Understanding these hazards is crucial for maintaining safety in any environment where potentially harmful substances are present, as proper safety measures, personal protective equipment, and training can reduce the risk of adverse health effects on workers.

The focus here is on the immediate impact of these substances on the human body and health, distinguishing them from physical hazards, which may refer to dangers like slips and falls, or environmental hazards that affect ecosystems. Radiological hazards, on the other hand, pertain specifically to radioactive materials and their effects, which do not apply to the broad range of irritants or toxic substances listed in the question.