Decompositions are what type of changes?

• A. Chemical postmortem changes
• B. Physical changes
• C. Biological changes
• D. Thermal changes

Answer: (A)

Decomposition is a chemical postmortem change. After death, enzymes and microbes break down tissues, converting complex molecules into simpler substances and producing gases and other degradation products. This chemical transformation is what creates the characteristic decay, odors, and liquefaction associated with decomposition. It isn’t simply a physical change, which would involve form or appearance changes without altering chemical composition, nor a purely biological process—though microbial action drives the chemical changes. It isn’t primarily about temperature changes, even though cooling or warming can occur. So the defining nature of decomposition is the chemical alteration of body tissues after death.