Answer:
Urbanization: this is the process by which the population or urban areas increases, usually because people move out to the cities form rural areas.
Metropolitan area: an admnistrative divison consisting in a city, and its sorrounding areas.
Suburb: the area sorrounding a city that has a lower population density than the urban core, but a higher population density than a rural area.
The relationship between these three variables is very close. Urbanization is what drives the growth of both urban cores and suburbs, and a metropolitan area emerges when a city and its suburbs grow enough that they require a new special administrative division in order to coordinate local policies.
Travel by bubble might seem more appropriate for witches in Oz, but two physicists suggest that a future spaceship could fold a space-time bubble around itself to travel faster than the speed of light.
We're talking about the very distant future, of course.
The idea involves manipulating dark energy — the mysterious force behind the universe's ongoing expansion — to propel a spaceship forward without breaking the laws of physics.er:
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Reduced efforts to clean emissions</span>
<span>The Wasatch Fault sits in Utah and slips in a mainly vertical direction. It has mountains that rise relative to the floor of the valley. It is referred to as a normal fault. The Wasatch Mountains were slowly lifted up and tilted slightly east due to the fault moving. On average throughout history it has lifted roughly 1 millimeter per year thought there are signs that a rapid slip has occurred during the past few thousand years.</span>
One of the most important roles of the rainforest is moderate destructive drought and rain cycles in local areas.
