Some food needs to be cooked to kill any germs and parasites in it.Hunger and thirst
Extreme hunger and raw uncooked food which tastes just as satisfyingly good
Extreme thirst and sea water which may seem just as satisfying too!
Yes, although not obligatorily so.Some food needs to be cooked to kill any germs and parasites in it.
And every survival manual i've seen says 'don't drink sea water or the salt in it will make you even thirstier'..