Aluminium corrosion resistance. Aluminium corrosion resistance is very good in untreated aluminium. Untreated aluminium has very good corrosion resistance in most environments. This is primarily because aluminium spontaneously forms a thin but effective oxide layer that prevents further oxidation.
Human body is just the medium for soul to survive on earth. Soul wears human body for its learning on earth. Soul can not experience feelings in its original form and therefore it needs a human body. Now when a human body dies, a soul leaves that body and return to its original form. Sometimes, in case of sudden accident, a person dies and soul returns to its original form.
With a higher-brain definition of death, you're gone when your personality is. With a whole-brain definition of death, you've lost the ability to breathe on your own again. Each breath provides the oxygen necessary for survival to the rest of the body. Very simply, dying starts to happen when your body doesn't get the oxygen it needs to survive. Different cells die at different speeds, so the length of the dying process depends on which cells are deprived of oxygen.