Because as the engine turns it produces electricity through the alternator but not stored so once the engine is switched off the car has to rely on the battery to start again. For instance, an F1 race car carries no battery so it has to be started externally, jump started really. Once it stalls it cannot get itself going again unless there is someone there to push start it (not a good idea - they are heavy and have a habit of leaving you flat on your face...)
Then replace the battery.
Yes, things that are dead still have cells. These cells begin to die after somatic death (whole body death).
For an external GPS, yes, assuming that battery is not also dead.
no
Your alternator is dead!
The hood should still open when the battery is dead
any type of dead wood or dead plants still have cells any type of organic material used for human use will still have cells.
no way.
hair
The form of potential energy inside of a battery is electrical energy travel inside the circuit. It takes cells inside the battery don't recharge, the cells are dead.
Dead battery
altinater is probobly dead