Holah
Classified in Geography
Written at on 
English with a size of 1.02 KB.
Biological structure: age and sex
| the age is organized in three groups
| sex males or females
- there are more males than females in young population
- same in adult population
- more females in elderly population
economic structure:
the population level of activity:
the active population working population
the inactive population children under 16
the economic sectors:
the primary sector: involves products directly from nature
the secondary: transformarion of natural products
the tertiary: service to people