Final answer:
The three factors affecting the disintegration of corpses or skeletons are the time elapsed between death and burial, the presence of living organisms, and natural taphonomic processes.
Step-by-step explanation:
The three factors affecting the disintegration of corpses or skeletons are the time elapsed between death and burial, the presence of living organisms, and natural taphonomic processes. The time elapsed between death and burial can affect the level of decomposition, with longer periods resulting in more advanced decomposition. The presence of living organisms, such as microorganisms and plant roots, can contribute to soil formation and fragmentation, which can lead to disarticulation of skeletal remains. Natural taphonomic processes, such as weathering and decomposition, can also cause disintegration over time.