How did middle-class families leaving the inner-cities for the suburbs damage inner-cities?

beans

explanation:

i would go with the last one

this forms a narrow, steep sided inlet (sometimes deeper than 1300 metres) connected to the sea. the terminal moraine pushed down the valley by the glacier is left underwater at the fjord’s entrance, causing the water at the neck of the fjord to be shallower than the main body of the fjord behind it.