Answer :
Final answer:
Low temperatures are not a respiratory hazard, while vapors, biological hazards, fibers, and particulates can pose respiratory threats.
Explanation:
Low temperatures are not a respiratory hazard because they do not introduce harmful substances into the respiratory system. On the other hand, vapors, biological hazards, fibers, and particulates can all pose respiratory hazards due to the potential of introducing harmful particles or chemicals into the lungs.
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