Correct Answer: B. marble and slate

Correct Answer: B. the sun

Explanation

(a) Contribution of Transportation to Economic development of a country.

— ensures movement of goods and services

— enhances inter-regional trade opens up new areas

— it makes for national integration

— leads to diffusion of ideas and technology

— creates access to natural resources offers employment opportunities

—generates revenue

— helps to develop tourism

— promotes international trade

— facilitates the movement of people

— earns foreign exchange.

(b) Factors that affect transport development in a country;

— insufficient capital

— inadequate technical know-how

— inadequate spare parts

— low patronage

— poor management

— difficult terrain

— growth of water weeds along river courses

— presence of cataracts, rapids and falls. adverse weather conditions

Correct Answer: B. Presence of tsetse flies

Correct Answer: C. iron and steel processing

Correct Answer: A. Time

Correct Answer:

Explanation

(a) Four ways in which physical factors may hinder the development of road transportation are:

(i) Rugged highlands create pattern for the development of roads

(ii) Climatic factors like rainfall can wash away existing roads or make it more difficult to construct new ones

(iii) Rivers, especially large ones do contribute greatly to the development of roads as huge amount is spent in the construction and erection of bridges

(iv) Swampy area is also a problem as it also takes large amount of money to construct bridges and flyovers across them.

(b) Four factors responsible for the poor network of railways in tropical African countries include:

(i) Capital costs for maintenance and operation of rail transport are usually high

(ii) Lack of spare parts and technical know-how tend to reduce the rail transportation

(iii) Rail lines are constructed only around mineral or agricultural producing areas hence the absence of these products results in low development of rail

(iv) it is relatively too slow and people do not want to travel with it.

Correct Answer: A. production costs

Correct Answer: B. Lagos and San Francisco

Correct Answer: B. 143cm