The mantle is a layer between the crust and the outer core. Earth's mantle is a silicate rocky shell with an average thickness of 2,886 kilometres (1,793 mi). The mantle makes up about 84% of Earth's volume. It is predominantly solid but in geological time it behaves as a very viscous fluid.
demolition - an event (or the result of an event) that completely destroys something wipeout, destruction conclusion, ending, finish - event whose occurrence ends something; his death marked the ending of an era; when these final episodes are broadcast it will be the finish of the show
redevelopmentnoun [ C/U ] us â /ËriÂ·dÉªËvelÂ·ÉpÂ·mÉnt/. âº the improvement of an area that is in bad condition, esp. an area of old buildings in a city: [ U ] Parking is something many plans for downtown redevelopment now recognize as critical. (Definition of âredevelopmentâ from the Cambridge Academic Content Dictionary Â© Cambridge University Press)