Mexicoâs ten largest cities (2009) 2. Show the relative sizes of the cities in a way which is clear to the viewer. Use some form of proportional representation, and justify your choice. 3. Describe the resulting pattern of Mexicoâs ten largest cities.
Atmosphere may refer to the gas surrounding a body or it may be a unit of pressure.efinition: Atmosphere refers to the gases surrounding a star or planetary body held in place by gravity.
The ozone molecules in the upper atmosphere (stratosphere) and the lower atmosphere (troposphere) are chemically identical, because they all consist of three oxygen atoms and have the chemical formula O3.his region of the atmosphere is called the stratosphere. The ozone in this region is commonly known as the ozone layer. The remaining ozone is in the lower region of the atmosphere, which is commonly called the troposphere. The figure (above) shows an example of how ozone is distributed in the atmosphere.