The collection of data in the field of environmental science has many challenges and limitations which affect the way the research in the field is conducted as compared to many other areas of science.
Environmental science pertains to the study of the environment in the physical and biological aspect.
Because it shows the ages of the population, so we can see the parts of the place with the population that can and can't work.
Now, the way these maps show social information is: because they point out the demographical distribution about a specific sub-group in the population, its age, and its growth.
And finally, the way these maps provide environmental information is: because they allow us to see the environment of certain zones inside the map territory.