64
Which of the following does not influence rock weathering?
- A. water
- B. carbonation
- C. roots
- D. ammonification
- E. temperature
65
The factors which affect the number and the activities of soil micro-organisms include the following except
- A. topography
- B. soil moisture
- C. soil aeration
- D. degree of soil acidity
- E. temperature
66
The following are characteristics of quartz except
- A. being granular
- B. having shiny surface
- C. being glass-like
- D. having cleavage
- E. being semi-translucent
67
Ice causes rock weathering
- A. through the processes of expansion and contraction
- B. through movement of large rock fragments against large boulders
- C. by dissolving some minerals in disintegrated rock fragments
- D. by exerting an abrasive action on rock fragments
- E. through chemical alteration of rock minerals
68
Which of the following in not an effect of the North-East trade winds on agriculture?
- A. encouraging growth of natural pasture
- B. encouraging fruit setting or formation
- C. inducing fruit ripening
- D. causing heavy rainfall
- E. drying forest trees
69
The roles of government in the development of agriculture include the following except
- A. recommending loans
- B. provision of subsidies
- C. establishment of farm settlements
- D. establishment of agricultural development projects
- E. training of farmers children
70
Most of the land used for agriculture in Nigeria are acquired through
- A. purchase
- B. pledge
- C. donation
- D. exchange
- E. inheritance
71
Which of the following is not correct about the importance of agriculture?
- A. supply of food
- B. provision of employment
- C. provision of the raw materials for agro-based industries
- D. serving as main source of foriegn exchange
- E. serving as a source of income