Question 251:

• WAEC 1989

If a crop requires 1.5 kg phosphorus per hectare, how many kg of manure will be required per hectare if 1 kg manure contains 0.49 kg of phosphorus?

A. 2.47
B. 2.97
C. 7.35
D. 12.39
E. 30.61

Question 252:

• WAEC 1989

The factor that does not influence land use is

A. Toptgraphy
B. Population pressure
C. Population graph
D. Forest establishment
E. Soil type

Question 253:

• WAEC 1989

Which of the following environmental factors is likely to have the greatest influence on crop production in Nigeria?

A. Temperature
B. Vegetation
C. Air movement
D. Moisture
E. Pressure

Question 254:

• WAEC 1989

The process whereby rocks are broken down into small particles through both physical and chemical factors is known as

A. Rock hydration
B. Rock degradation
C. Oxidation
D. Erosion
E. Weathering

Question 255:

• WAEC 1989

The parent material of a soil is formed from the disintegration of

A. Sand
B. Gravel
C. Silt
D. Rock
E. Organic matter