[The paths get shorter. Pastoral nomadism as an adapted way of life in deserts].
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D000349:Africa; D003247:Conservation of Natural Resources; D003710:Demography; D003906:Developing Countries; D004463:Ecology; D004641:Emigration and Immigration; D004777:Environment; D005523:Food Supply; D011153:Population; D011157:Population Dynamics; D014171:Transients and Migrants
Africa; Carrying Capacity; Demographic Factors; Developing Countries; Ecology; Environment; Food Supply; Migrants; Migration; Natural Resources; Nomads; Population; Population Dynamics