Differentiate between shopping centers and heavy industrial zones​

The purpose of the Heavy Industrial Zone (I-1) is to provide for industry where access is available to transportation routes, transportation facilities, and public service facilities and where surrounding land use and the environmental setting will permit most industrial uses without major adverse impacts.

Commercially zoned areas are generally reserved for businesses that have some kind of interaction with the public. These may be offices, retail stores, restaurants or bars. Commercial zoning can also include hotels and apartment complexes.

Magma is outside the volcano  and lava is inside the volcano. 

The answer is 1-plate movement along fault lines