Human Geography

According to Thomas Malthus' theory on population dynamics, human population tends to increase exponentially (geometrically) while food supply increases arithmetically. Which of the following represents a 'preventive check' to population growth within Malthusian theory?

Match each population theory, model stage, or demographic concept on the left with its corresponding characteristic description or theoretical premise on the right.

In a demographic survey of a municipality in Nigeria, the total population was recorded as $120{}000$. The survey revealed that $42\%$ of the population is under $15$ years of age, and $6\%$ is aged $65$ years and above. Calculate the total dependency ratio of the municipality (expressed as a percentage rounded to one decimal place).

During a five-year demographic survey period, a coastal region in Nigeria recorded an initial total population of $1,200,000$. Over this period, total live births were $150,000$ and total deaths recorded were $70,000$. At the end of the five years, a census established the total population at $1,340,000$. Assuming no other vital statistics apply, calculate the net migration (the net gain of in-migrants over out-migrants) experienced by the region over this period.

Demographic analysis relies on precise definitions of population metrics and growth dynamics. Match each population concept on the left with its corresponding definition or characteristic feature on the right.

An administrative district in West Africa has a total population of $450,000$ people and a total surface area of $3,000\text{ km}^2$. If $1,000\text{ km}^2$ of the district's land area is arable and used for crop cultivation while the remaining $2,000\text{ km}^2$ is non-arable, what is the physiological population density of this district?

Along the low-lying floodplains of a major river basin, farming homesteads are built continuously along an elevated gravel terrace and embankment road to avoid seasonal inundation, while agricultural fields occupy the lower basin. Which of the following correctly identifies the primary physical site determinant and the resulting rural settlement pattern?

Match each geographic factor on the left with its corresponding impact on regional population density on the right.

Match each population growth concept or metric on the left with its corresponding analytical definition or operational condition on the right.

Complete the statement below regarding rural settlement spatial arrangements by supplying the appropriate geographical terms for each blank.

An agricultural district in West Africa experiences severe land degradation, compelling a significant portion of its economically active population to relocate. Prior to migration, the district recorded $40,000$ children (aged 0–14), $10,000$ elderly citizens (aged 65+), and $100,000$ working-age adults (aged 15–64). If out-migration permanently reduces the working-age population by $50\%$ while the non-working dependent population remains unchanged, which of the following correctly evaluates the demographic impact on the sending region's dependency ratio and classifies the primary migration driver originating at the rural source?

In population geography, various social, economic, and environmental conditions influence the movement of individuals from rural settlements to urban centers. Which of the following represents a push factor that drives rural-to-urban migration?

Despite possessing moderate annual rainfall and a central location within Nigeria, the Middle Belt historically displayed a much lower population density than both the northern Sudan savanna and the southern forest zone. Which of the following combinations of factors best accounts for this historical anomaly in population distribution?

Severe drought and soil degradation in a rural farming community compel young inhabitants to relocate to urban areas in search of non-agricultural employment. Which type of migration factor is primarily responsible for forcing these individuals to leave their place of origin?

In a semi-urban local government area in Kano State, Nigeria, the total age dependency ratio is recorded as $80\%$. If the population of children (aged $0-14$ years) is $90{}000$ and the population of elderly persons (aged $65$ years and above) is $18{}000$, what is the total number of economically active individuals (aged $15-64$ years) in this local government area?

Match each rural settlement pattern with its corresponding spatial arrangement or geographical characteristic.

In a baseline demographic survey of an agricultural district in West Africa, $35\%$ of the population is under 15 years of age, $60\%$ is between 15 and 64 years of age, and $5\%$ is 65 years of age or older. What is the total dependency ratio of this district?

In many rapidly growing cities of developing nations, the uncontrolled lateral expansion of urban land cover into adjacent rural zones leads to the loss of prime agricultural land, habitat destruction, and excessive costs for extending municipal utilities. Which urban settlement phenomenon best describes this process?

Match each population concept or growth index on the left with its corresponding demographic definition or structural relationship on the right.

Following a major outflow of young healthcare professionals from a West African nation to Europe, demographers evaluated the resulting population metrics in the source country. Which of the following best describes the primary demographic consequence of this selective out-migration stream on the country of origin?