Jamb Geography 1987 Past Questions and Answers

Question 16:

• JAMB 1987

Under which of the following vegetation types would you expect to find soils which have a B horizon rich in calcium carbonate?

A. Temperature grassland
B. Coniferous forest
C. Tundra
D. Tropical rain

Question 17:

• JAMB 1987

The direct effect of sheet erosion on soils is the?

A. Exposure of the surface to intense insolation
B. Washing away of the fine clay and humus particles
C. Leaching of nutrients down the soil profile
D. Mixing of infertile materials with the soil

Question 18:

• JAMB 1987

The best soil conservation practices are those aimed at?

A. Reclaiming depleted soils
B. Prolonging the fallow period
C. Sustaining the productivity of the soil
D. Managing soil erosion

Question 19:

• JAMB 1987

Growth of world population over anyone period of time is best explained by?

A. Changes in technology and social organization
B. Advances in the knowedge of medicine
C. Positive balance between birth rate and death rate
D. Increased food production

Question 20:

• JAMB 1987

The most obvious evidence of over population in some parts of south eastern Nigeria is the?

A. Highrate of urbanization
B. Extensive land degradation
C. Scarcity of potable water
D. Low crop yield