Some believe it's because hot air travels upwards and that is why the freezer is not at the bottom. But, it because it makes it easier to organize and find your stored frozen food.
A lot of home units cool solely on the freezer side, and "vent" cooling to the Refridge box side. Either the vent is blocked, or a helper fan, that pushes/pulls the freezer air is not spinning. Is...
No,
let me give you an example, if you put milk or any liquids in the freezer they will freeze.
there are certain foods that cannot be put in the freezer