What do we call the situation wherein metropolitan areas sprawl in all directions and suburbs to take on many of the characteristics of traditional downtowns?

a. counter urbanization
b. urban decentralization
c. concentric zones model
d. urban realms model
e. edge cities

Ba population changes in response to a change in environment

Magma forms by partial melting of upper mantle and crust. partial melt means that only a fraction of the available material forms a melt, and that the remainder stays solid. the partial melt rises because of its lower density and ascends through he crust. this is so conclusive mean the answer would be magma igneous rocks or balistic magma.