Correct Answer: D. ranching

Correct Answer: A. plutonic rocks

Correct Answer: D. confluence town

Correct Answer: B. extreme unevenness

Correct Answer: A. automobile industries

Explanation

(b) Benefits of hydro-electric power to the

of Africa,

(i) Improves the standard of living of the people.

(ii) Training of local technicians.

(iii) Energy for domestic uses.

(iv) Energy for industrial uses.

(v) Revenue to government.

(vi) Foreign exchange to government.

(vii) Conservation of foreign exchange

(viii) Growth of towns

(ix) Employment to workers.

(x) Energy for use at offices for powering appliances.

(xi) Enhancement of ICT (information and Communication Technology).

Explanation

(a) Hinterland refers to the area of land that can be served by a particular sea port

(b) The importance of sea ports in the economy of Nigeria include:

(i) Sea ports like Apapa port serves as a point where imported and exported goods come in or move out of the country respectively

(ii) Sea ports generally like Port Harcourt and Apapa ports generate , revenue for the government

(iii) Sea ports generally provide employment for many people

(iv) Sea ports bring people together for the exchange of ideas and culture

(c) Four problems of port development in Nigeria are:

(i) The Deposition of sand, silt, clay at the delta and along the coast makes port development a problem

(ii) The nature of the coastline poses a problem as most coastlines are not suited for the development of ports

(iii) Shallow nature of the coasts;Most of the coasts in Nigeria are very shallow and this makes it difficult for large vessels to sail to the coast

(iv) Fluctuations in ocean tides: There is fluctuation in tides (rise in the volume of water in the ocean) along the coasts as there are occasions of high tides and other occasions of low tide Sokoto Plain

Correct Answer: A. the tropic level

Explanation

(a) Reasons for rapid-growth of world population in the last two decades are:

(i) Modernization of agriculture leading to plentiful and varied food supply

(ii) Improved health services

(iii) Knowledge of the cause of infectious diseases and how to prevent them

(iv) Better sanitation

(v) Reduced infant mortality rate as a result of better care

(vi) A lowering of the marriage age from 22 to 20 and below

(vii) Change in child bearing pattern as women want to have all their children at once and have a rest later

(viii) Modernization and industrialization make standard of living to improve.

(b) Three problems arising from this rapid growth;

(i) Problem of housing (accommodation)

(ii) Problem of transportation

(iii) Shortage of food (or starvation)

(c) Solutions to these problems;

(i) Government and other agencies should establish residential estates

(ii) More roads, railways and other transportation network to take care of the increasing population

(iii) Mechanized agriculture should be practised.

Correct Answer: B. nucleated and elongation