This type of coma is usually reversible once the blood sugar is corrected. Oxygen deprivation: Oxygen is essential for brain function. Cardiac arrest causes a sudden cutoff of blood flow and oxygen to the brain, called hypoxia or anoxia.
The external power supply is the AC power adapter that converts household AC electricity voltages to the much lower DC voltages needed to charge a mobile phone's internal battery.
An externality is an effect on people who were not a party to the transaction that creates the effect. Because anarcho-syndicalism is a revolutionary strategy for replacing capitalism with a form of highly democratic socialism based on self-management, it is not a theory or model of a particular economic system.