The mass of air whose isobars form a circular shape, with low pressure in the centre and increasing towards the outside, is known as?

A. hurricane

B. typhoon

C. harmathan

D. cyclone

The process by which organic matter is decomposed and synthesized to form part of the soil is known as?

A. humification

B. mineralization

C. laterization

D. nitrification

In a ecosystem, bacteria and some other microscopic organisms are best described as?

A. secondary consumers

B. major decomposers

C. primary decomposers

D. primary consumers

The process whereby water changes from liquid to gaseous state is called?

A. freezing

B. condensation

C. evaporation

D. sublimation

A serious environmental hazard which causes both vertical lateral displacement of part of the earth's crust is?

A. earthquake

B. volcano

C. landslide

D. weathering

If the standard time is of a country is GMT + 1hr, which longitude's local time is adopted by the country?

A. 60°W

B. 60°E

C. 16°W

D. 15°E

Migrant-receiving areas tend to be characterized by?

A. equal sex ratio

B. high per capita income

C. the predominance of males

D. extensive industrial development

The settlement pattern associated with pastoral farming is?

A. radial

B. dispersed

C. nucleated

D. linear

Air transportation is poorly developed in the Third World because of?

A. poor economic base

B. few indigenous airline operators

C. ill-equipped airports

D. poor technology

Squatter settlements are indicative of?

A. the dominance of small families

B. poor urban planning

C. shortage of building materials

D. the great pressure on available housing