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unit 2 human geo
| Term | Definition |
|---|---|
| Niger | Stage 2 |
| Sub- Saharan Africa | Stage 2 |
| South Asia | Stage 2 |
| Mexico | Stage 3 |
| India | Stage 3 |
| Colombia | Stage 3 |
| South Africa | Stage 3 |
| US | Stage 4 |
| Canada | Stage 4 |
| Austraillia | Stage 4 |
| Europe | Stage 4 |
| Japan | Stage 5 |
| Germany | Stage 5 |
| Italy | Stage 5 |
| Stage 1 | High Birth + High death (Slow Growth) |
| Stage 2 | Death rates drop, birth rates still high (Rapid growth) |
| Stage 3 | Birth rates drop (Slower growth) |
| Stage 4 | Low birth, Low death rate (Stable growth) |
| Stage 5 | Very low birth rate (Population declining) |
| Internal Migration | Move within a country |
| Ravensteins Laws | “Short steps, rural to urban, young move, men work, women marry.” |
| Gravity model of migration | Migration increases with bigger populations and decreases with greater distance. |
| Zelinskys migration transition model | Links migration to DTM stages |
| brain drain | loss of skilled workers |
| remittances | money sent home |
| Arithmetic | Ppl/ Total land |
| Physiological | Ppl/ Arable land |
| Agircultural | Farmers/ arable Land |
| Population pyrimad | age and sex structure |
| Malthusain theory | Population grows faster than resources, which can lead to crisis unless controlled |
| Wide base= | Rapid growth (ex. Nigeria) |
| Narrow base | Declining growth (ex. Japan) |