Complex sentence: Examination of the body showed cuts and abrasions and internal trauma, and it was clear that the boy had died from either asphyxiation or a skull fracture or a combination of the two.
Split into simpler sentences: Examination of the body showed cuts and abrasions and internal trauma on the body. It was also clear that the boy had died from either asphyxiation or a skull fracture or a combination of the two.