The Sahara Desert
Mountains are the geographic feature that most effectively serve as a natural barrier that limits contact between cultures.
limits on international trade with South Africa
A factor that limits the growth of a population.
Mountains are often considered a geographic feature that served as a natural barrier between cultures, as they are challenging to cross and can restrict movement and communication between different groups of people. For example, the Himalayas in Asia and the Andes in South America have historically limited contact and interaction between nearby cultures.
Desertification
Food supply
7 Billion
In a population without limits, there will be an increase in the population size. For that we will use the equation (dN/dt) = 1.0 N where N is the number of individuals in the population and (dN/dt) is the rate of change in the number of the population over time.
As of 2004, Cairo, the capital of Egypt, is the African capital with the largest population, about 7.6 million. When the surrounding metropolitan area is included, Cairo has a population of 11.1 million, making it the among the twenty largest cities in the world. As of 2007 (according to Wikipedia), Lagos, Nigeria has the most population, with over 8,714,228 people. Cairo comes next with over 7,734,334.
About 677,000 inside the city limits.
The confines of a city refer to the boundaries or limits that define its geographic extent. These boundaries can be physical features like rivers, mountains, or man-made boundaries like city limits or municipal boundaries that separate it from neighboring areas.
Shorter life expectancy, incurable disease, over population and not enough food can limit population growth