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Which of the following would NOT be classified as a biological agent?

  1. Bacteria

  2. Viruses

  3. Fungi

  4. Chemical compounds

The correct answer is: Chemical compounds

The classification of biological agents includes living organisms or their byproducts that can cause diseases in humans, animals, or plants. Bacteria, viruses, and fungi all fall under this category as they are all forms of microorganisms capable of replication and causing unique biological effects. In contrast, chemical compounds do not fit this classification. They are composed of chemically synthesized or naturally occurring substances that do not possess the essential characteristics of living organisms. While chemical compounds can be toxic or harmful and may pose health risks, they lack the biological processes that define agents like bacteria, fungi, and viruses. This distinction is crucial in understanding the different types of hazards and how to respond to them effectively in HAZMAT situations.