Geography of Africa

Match each African timber species listed on the left with its corresponding commercial forestry context or economic characteristic on the right.

A demographic survey of a rural sub-county in East Africa with a total population of $500{}000$ records $180{}000$ children aged $0\text{--}14$, $20{}000$ elderly persons aged $65$ and above, and $300{}000$ adults in the $15\text{--}64$ age bracket. Following a severe environmental drought, many residents move toward urban centers while remaining farmsteads cluster tightly along the main arterial road. Which of the following statements correctly evaluates the demographic metrics or population dynamics of this sub-county?

Arrange the following African vegetation zones in descending order of their commercial hardwood timber yield and forest biomass density, starting with the zone of highest potential.

The Gezira Scheme in Sudan utilizes gravity-flow irrigation from the Sennar Dam on the Blue Nile to support large-scale agricultural production. Which major cash crop is primarily cultivated under this scheme for international export?

Match each of the following major African mining centers with its principal mineral resource.

A timber processing firm operating in the equatorial rainforest zone of Central Africa requires dense, durable wood for high-grade joinery and cabinet making. Which of the following options correctly identifies an indigenous timber species from this zone, its wood classification, and its primary economic application?

Match each African country listed on the left with its corresponding forestry feature or commercial timber characteristic on the right.

In sub-Saharan Africa, recurring severe droughts and agricultural land degradation force rural farming communities to abandon their villages in search of livelihood opportunities elsewhere. Which migration factor best categorizes these unfavorable environmental conditions at the origin area?

Which of the following tree species harvested from the West African tropical rainforest is classified as a commercial tropical hardwood?

Pastoral nomadism in the Sahel region of Africa is characterized by transhumance, where herders move their livestock between distinct ecological zones throughout the year. Which of the following environmental factors primarily drives this seasonal migration pattern?

Match each African vegetation zone listed on the left with its corresponding plant adaptation and ecological characteristic on the right.

Mauritania is one of Africa's leading exporters of high-grade iron ore, extracted mainly in the Saharan interior at Zouérat. Which of the following transport and infrastructure arrangements primarily makes the commercial exploitation and export of this inland mineral resource economically viable?

Commercial lumbering in the equatorial rainforests of West and Central Africa faces unique operational difficulties compared to temperate forest exploitation. Which of the following factors primarily accounts for the high production cost per unit volume of timber harvested from these African forests?

In East Africa, the volcanic highlands of Rwanda, Burundi, and the Kenyan Rift Valley support some of the highest rural population densities on the continent, often exceeding $400$ persons per square kilometer. Which combination of geographic factors is primarily responsible for sustaining these exceptionally high rural population concentrations?

Match each African agricultural system or development scheme with its corresponding environmental adaptation or operational characteristic.

Match each distinct geographic region of Africa listed on the left with its corresponding population density driver or prevailing demographic migration pattern on the right.

Match each African agricultural system or development scheme listed on the left with its defining environmental adaptation, operational feature, or policy mechanism on the right.

During an environmental audit of forestry practices in the equatorial rainforests of the Congo Basin, analysts observe that logging operations exclusively extract indigenous species such as Mahogany, Sapele, and Iroko, while ignoring softwood species like pine and fir. What fundamental botanical distinction and geographical reality explain this selective harvesting pattern?

In West Africa, commercial oil palm cultivation is predominantly concentrated in the southern humid forest zone rather than the northern savanna belt primarily because oil palm requires which of the following environmental conditions?

In a demographic study of an agricultural region in West Africa covering a total surface area of $150{}000\text{ km}^2$ ($20\%$ of which consists of non-arable mountainous terrain and water bodies), the population at the beginning of a 10-year census period was $9{}000{}000$. Over the 10-year period, official demographic records indicate $2{}700{}000$ live births, $1{}050{}000$ deaths, $600{}000$ inbound immigrants, and $150{}000$ outbound emigrants. What is the physiological population density of the region in persons per square kilometer of arable land at the end of the 10-year period?