Autolysis by lysosomes (↓ ATP)
Putrefaction by saprophytes
Pseudomelanosis. Greenish or bluish discolouration resulting from the action of sulfureted hydrogen on the iron of disintegrated hemoglobin 
Rigormortis: First in cardiac muscles then in skeletal muscles
Algormortis: Postmortem cooling of body
Livor mortis: Postmortem staining of body
Rigormortis is fast in carcass died of Strychnine poisoning, Lead, Clostridium tetani
When burns are 30 to 40% of body surface then shock is life threatening