__________ theory argues that city growth is generated by the pressure from the city center to expand outward. Expansion threate
ns to encroach on the surrounding areas and does so in concentric waves, or circles, with the center being the most intense, having the highest density and highest occupancy. These concentrations become progressively less intense and of lower density with greater distance from the center.
The defensible space theory states that an area can only be defined as a housing development if the people living in that location decide and defend that that area should adopt a good design and structure. For this reason, the area becomes a defensible space. In other words, the theory states that a residential area is only a successful defensible space, if the area forms a set in agreement between society and the physical elements of the region.
In addition, the theory argues that citizens should feel safe and responsible for this region, living in society and harmony.
For this problem, we can use Boyle's law, which states that for a gas at constant temperature, the product between pressure and volume remains constant:
