Notes 3.22.11

Notes 3.22.11 - Geog 120 Notes 3.22.11 I. Sub-Saharan...

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Geog 120 Notes 3.22.11 I. Sub-Saharan Africa a. Sahel Region i. Region of transition between the Sahara Desert and the region below. ii. Very little vegetation, little rainfall. b. Savanna i. Just below the Sahel ii. Sparse vegetation, some rainfall, but not enough for forest region. iii. Extends all the way through to the Horn of Africa. c. Tropical Rainforest i. A lot of rainfall, but not good for agriculture because all of the nutrients are in the vegetation, not the soil. d. Subtropical Deserts e. Kalahari Desert (in the South) f. Population: Roughly 800 million people live in the region, most of whom are poor and rural (live off the land) i. Population is growing rapidly (by 2050, growth rate will be 120% (3X world’s growth rate)). ii. Population is very mobile iii. Agricultural Density: Number of people per unit of arable land (Sahel agricultural density = 10X population density) iv. Large families are preferred (women marry young, high fertility rates, illiteracy among women, high child/infant mortality rate,
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Notes 3.22.11 - Geog 120 Notes 3.22.11 I. Sub-Saharan...

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