URBNLIVINGTall Wooden 7 Compartment Cube Bookcase Storage Unit for Office Living Room, Bedroom Shelving

Can you wall hung this bookshelf?

Can the positions that the shelves go be changed please? Or are they set to go as in the picture. Thanks.

Would you have to install the back panel in order for it to stand? Or can I build just the shelves and sides?

How thick is the wood