Urban Environments

4. little room for improvement because incomes are low, rents are high, leasing arrangements are insecure and there are environmental problems
6. where 32% of the world's total population live (78.2% of urban population in LEDCs)
7. commercial and economic cores of cities
13. development of activities to increase residential population densities within the existing built up area of a city
14. policy in Mexico city 1989 to reduce pollution
16. cities with a population of over 10 million people
17. amount of arable land and water resources that is required to produce the resources it consumes and absorbs its wastes under prevailing technology

1. when the rapid expansion of urban populations (esp. in LEDC's) overwhelms the ability of cities to provide adequate services (eg. housing, sanitation, drinking water, education, and employment)
2. process by which an increasing percentage of a country's population comes to live in towns and cities
3. process involving the movement of population away from inner urban areas to new towns,new estates, villages/rural urban fringe
5. reinvestment of capital into inner city areas
8. the physical separation of population by culture, income or other criteria
9. abandoned, derelict or underused industrial buildings and land, which may be contaminated but have potential for redevelopment
10. outward growth of towns and cities to engulf surrounding villages and rural areas
11. movement of people away from city centre to rural/suburb
12. residential area within or just outside the boundaries of a city
15. movement of people away from the countryside to towns/cities and cities