Answer:
1.)There might not be visible signs
2.)No history of ill health
3.)No family
4.)Autopsy can be difficult if the body is old
The circumstances leading to the death of an individual may be required in certain circumstances, hence, subjecting the corpse to autopsy examination. Cause of death may be difficult to determine in certain scenarios due to the following reasons :
Time of death : Sometimes corpse or dead bodies are only found long after their demise, such that they could have been decomposed. In such scenario, examining the cause of death may be difficult.
Unknown ailment : Some individuals often have an underlying medical condition, which may be unknown to family members or the dead person itself which might have led to his/her demise.
Natural cause : Not all death cases are caused by accident or ailment. Death might result without a trace pertaining to medical defect or wellness. Hence, making the cause difficult to investigate .
Therefore, several factors might make investigating the cause of death very difficult.
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