Geography 2006 Jamb Examination

Lowland areas typically have warm temperatures, deep fertile soils and abundant water availability.
Sugarcane, rice and sorghum all thrive under warm lowland conditions because they require high temperatures, good moisture and long growing seasons.
These crops are widely cultivated in lowland tropical regions globally, making them most suitable for such environments.

A frequency graph simply shows the distribution of values, not the relationship between two datasets.
Scatter diagrams compare two variables by plotting corresponding values against each other, making it possible to judge the degree and direction of correlation.
Therefore, scatter diagrams are used to express relationships between paired population datasets.

In developed economies, industrialisation is advanced and service industries dominate employment.
Secondary activities remain important through manufacturing, while the service sector (tertiary) is the largest employer.
This makes the combined involvement in secondary and tertiary sectors the most accurate description.

Western Europe and the United States of America dominate global trading volumes due to their large industrial bases, high consumption capacity and advanced transportation networks.
These regions have historically accounted for a significant proportion of global imports and exports.

Singapore Island has one of the highest population densities in the world, with extremely limited land area and a large urban population.
The Amazon Basin and Inland Niger Delta have sparse populations, while the Nile Valley is densely populated but not as concentrated as Singapore.
Therefore, Singapore Island has the highest population density among the options.

Prevailing winds push surface water masses across the oceans, forming major currents.
The rotation of the Earth (Coriolis force) further deflects these currents, determining whether they move clockwise or anticlockwise in different hemispheres.
These two factors overwhelmingly control the direction of ocean currents.

Urban primacy occurs when a single city is disproportionately larger and more dominant than all others in a country.
This happens when the primate city attracts the majority of economic activity, infrastructure and population, concentrating urban growth into one major centre.

Limonite is an iron ore composed mainly of hydrated iron(III) oxide.
Columbite is an ore of niobium, while anthracite and lignite are types of coal, not iron ores.
Thus, limonite is the only iron ore among the options.

Japan's major cities grew rapidly due to post-war industrial expansion, which attracted labour and intensified urban development.
Industrialisation created employment opportunities and stimulated economic activities, leading to the growth of large metropolitan areas such as Tokyo and Osaka.

Orogenesis refers to the processes involved in the formation of mountains, including folding, faulting and uplift of the Earth's crust.
This distinguishes it from weathering, which breaks down rocks, and orocline, which refers to bending of mountain belts rather than their formation.