Our changing population

1. Natural increase

1.1. Formula

1.1.1. Birth-death

1.2. Diference between the number of

1.2.1. Births

1.2.2. Deaths

1.3. Can be

1.3.1. Positive

1.3.1.1. Birth higher than death

1.3.2. Negative

1.3.2.1. Death higher than birth

2. Actual increase

2.1. Formula

2.1.1. Natural increase + inmigrants - enmigrants

2.2. Can be

2.2.1. Positive

2.2.2. Negative

2.3. Causes of migratory movements

2.3.1. Natural

2.3.1.1. Example

2.3.1.1.1. Floods

2.3.2. Social

2.3.2.1. Example

2.3.2.1.1. Wars

2.3.3. Economic

2.3.3.1. Example

2.3.3.1.1. Job opportunities

3. Absolute population

3.1. Number of inhabitants in an area

3.2. Constantly changing

3.2.1. Looking

3.2.1.1. Births

3.2.1.2. Deaths

3.3. Dis characteristics are call

3.3.1. Demography

4. Population density

4.1. How populated an area is

4.2. Calcule with

4.2.1. square kilometers

4.3. Formula

4.3.1. Population between square kilometers