number of land\total population = number of people per km2 But: Only if people are evenly spread out, which they are not! Case study: Botswana, Kalahari desert Population density and distribution Physical factors: Human factors: Kalahari area is semi desert with annual rainfall of less Many people are nomadic farmers and have no fixed than 400 mm settlements. Soil is and not fertile and other areas are protected as national parks Other areas: Deltas are wet and swampy Economic factors: Chobe district has many dangerous wild animals Farming is very difficult in the Kalahari desert There are large areas of salt plains with no drinking water Land cannot support animals or crops Few and transport links Migration and its effects on population Types of migrants: Asylum seeker: person who has left due to fear of persecution Refugee: person has left due to fear for their life from war, famine etc. FORCED MIGRATION person who moves to another country (if for work: an economic migrant) International migrant: National migrant: person who moves to lives somewhere else in their own/the same country VOLUTARY MIGRATION Illegal migrant: person who enters the country without permission International Migration: Mexico to USA What is the situation? Effects on USA Mexicans make up 29.5 % of all foreigners in the USA. Illegal migration costs the USA millions of dollars for border Mexican immigrants account for about 20% of the legal patrols and prisons immigrants living in the USA. Mexicans are seen as a drain on the USA economy drain is occurring out of Mexico. Migrant workers keep wages low which affects Americans e.g. An estimated 14,000 of the 19,000 Mexicans with They cause problems in cities due cultural and racial issues doctorates live in the USA (International Organization for Mexican migrants benefit the US economy by working for Migration) low wages
number of land\total population = number of people per km2 But: Only if people are evenly spread out, which they are not! Case study: Botswana, Kalahari desert Population density and distribution Physical factors: Kalahari area is semi desert with annual rainfall of less than 400 mm Soil is and not fertile and other areas are protected as national parks Economic factors: Farming is very difficult in the Kalahari desert Land cannot support animals or crops Few and transport links Human factors: Many people are nomadic farmers and have no fixed settlements. Other areas: Deltas are wet and swampy Chobe district has many dangerous wild animals There are large areas of salt plains with no drinking water Migration and its effects on population Types of migrants: Asylum seeker: person who has left due to fear of persecution Refugee: person has left due to fear for their life from war, famine etc. FORCED MIGRATION International migrant: person who moves to another country (if for work: an economic migrant) National migrant: person who moves to lives somewhere else in their own/the same country VOLUTARY MIGRATION Illegal migrant: person who enters the country without permission International Migration: Mexico to USA What is the situation? Mexicans make up 29.5 % of all foreigners in the USA. Mexican immigrants account for about 20% of the legal immigrants living in the USA. drain is occurring out of Mexico. e.g. An estimated 14,000 of the 19,000 Mexicans with doctorates live in the USA (International Organization for Migration) Effects on USA Illegal migration costs the USA millions of dollars for border patrols and prisons Mexicans are seen as a drain on the USA economy Migrant workers keep wages low which affects Americans They cause problems in cities due cultural and racial issues Mexican migrants benefit the US economy by working for low wages