The low level of trade among West African countries is mainly because

A. of mistrust among them

B. of the language barrier

C. there is a well developed transport network

D. they produce similar goods

E. they have different currencies

The basin system of irrigation in the Nile Basin is not reliable because

A. too much of the water percolates into the ground

B. only a few crops can be grown

C. it is not considered suitable by some farmers

D. too much labour is involved in making the basins

E. it depends on the flow of the Nile in a particular year

Which of the following represents the first stage in the lumbering process?

A. Trees are felled

B. Platforms are built for buttress trees

C. Particular species are identified

D. Trees are cut into logs

E. Logs are transported by road to sawmills

The Muturu type of cattle is reared mainly in the western highland region of Nigeria because

A. it has no hump

B. of the harsh weather of the North-central highlands

C. it is resistant to tsetse files

D. of the luxuriant pasture there

E. it produces a lot of milk

Monoculture is a term associated with

A. livestock farming

B. arable farming

C. mixed farming

D. plantation agriculture

E. shifting cultivation

Some plant diseases are checked during the fallow periods in the bush fallowing system of agriculture because the

A. humus accumulates over time

B. fires used in clearing the bush destroy them

C. plant species resist the diseases

D. disease organisms lose their hosts and die

E. land is heavily fragmented