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.
Hard Power vs Soft Power Difference between Hard Power and Soft Power is, as the name implies, in the form of power that a country uses in dealing with other nations. The terms Hard Power and Soft Power represent two important concepts in the field of International Relations, more specifically, in the political relations between states.