I think if we're in the situation without electricity, internet, full food shops and no gas at all within two weeks the elevation would be 20 - 30% less.
They die just because the food storage is empty, the fridge too, food in the freezer is rotten, no 24/7 shop open, killing each other becaue they need to talk to each other and not writing internet messages or can't update the Facebook status.
About the topic "buying food" in Europe: Here's a bit different than in other areas of the world. Most of the people buy food for one or two days only because there's no reason to do any kind of storage (they think).
They die just because the food storage is empty, the fridge too, food in the freezer is rotten, no 24/7 shop open, killing each other becaue they need to talk to each other and not writing internet messages or can't update the Facebook status.
About the topic "buying food" in Europe: Here's a bit different than in other areas of the world. Most of the people buy food for one or two days only because there's no reason to do any kind of storage (they think).