Correct Answer: C. coastal flooding

Correct Answer: C. Inadequate technology

Correct Answer: B. fog and iceberg

Correct Answer: C. Jebba

Explanation

(a) ways in which human activities affect the composition of the atmosphere ;

(i) Emission of carbon dioxide, e.g burning fossil fuel such as coal, petrol gas

(ii) Deforestation

(iii) Use of chemical, biological and nuclear warfare

(iv) Release of toxic waste

(v) Bush burning

(vi) Pollutants emitted from industrial activities

(vii) Pollutants emitted from mining and construction works

(b) physical changes that are likely to be associated with the increasing reduction of the ozone layer in the upper atmosphere

(i) As the ozone layer increases the amount of ultra-violet rays increases in the atmosphere

(ii) The increase in ultra-violet rays increases the amount of solar radiation at the earth's surface

(iii) Excessive ultra-violet rays leads to increase in skin cancer in man

(iv) Increased temperature leads to melting of polar ice and this leads to rise in sea levels.

(v) Possible increase in precipitation

(vi) Death of chlorophyll in plants leads to inability of plants to manufacture food.

Correct Answer: A. two or three crops can be produced in a year from the same piece of land

Explanation

(a) Winds:Warm winds raise the temperature of adjacent coastlands, e.g the westerlies bring warm air into Western Europe. Cold winds lower the temperature of adjacent coastlands e.g cold polar winds lower the temperature of the coasts of Newfoundland. Warm, moist winds from the ocean bring rainfall to the adjacent coastland, e.g S.W Monsoon in West Africa. Dry winds from the interior do not produce rain rather they produce dust and dryness, e.g Northeast trade wind brings no rain but dust and dryness to the coastal lands of West Africa. Off shore winds blowing from the interior to the coast produce fogs at the coast, e.g fog formation along the Namibian coast.

(b) Ocean Current: Cold currents lower the temperature of adjacent coastlands e.g the Benguella current, currents help in

the formation of foes along the coast e.g cold Benguela and Canaries current. Warm currents raise temperature of the adjacent coastlands e.g warm Guinea and warm Mozambican currents. Cold currents result in the formation of coastal deserts e.g Kalahari desert because of cold Benguela current, Sahara desert bec use of cold canaries current

(c) Distance from the sea:Generally the further inland from the sea the less rainfall, e.g Freetown on the coast and Timbuktu inland. Smaller range of temperature along the coast than inland e.g Calabar (less than 30°C) and Agades (more than 15°C) Higher humidity along the coast than further inland generally (one town along the coast and any town inland). Thicker cloud cover along the coast than inland.

Correct Answer: A. Britain, USA, Germany and Japan

Correct Answer: B. habitat

Correct Answer: A. It is not an area of inland drainage