The weight of water vapour contained in a given volume of air is referred to as?

A. absolute humidity

B. specific humidity

C. relative humidity

D. vapour pressure

A piece of evidence that confirms that the earth is spherical is the?

A. standard time

B. solar system

C. earth's orbit

D. moon's eclipse

Soil texture is determined primarily by?

A. profile horizons

B. major components

C. particle sizes

D. nutrient status

The two primary causes of ocean currents are?

A. differential algae development and sunlight penetration

B. differential salinity and temperature variation

C. variation in evaporation and coral development

D. location of settlements and sea-level pressure

Soil conservation is achieved through?

A. mulching, terrace farming and tree-felling

B. sensible tillage, tree-felling and bush burning

C. scientific farming, crop rotation and bush buring

D. sensible tillage, crop rotation and mulching

The Sudan savannah vegetation is associated with the?

A. tropical monsoon

B. sub-tropical dry summer climate

C. hot semi-desert

D. tropical dry and wet climate

A weather element controlled mainly by latitude is?

A. temperature

B. humidity

C. rainfall

D. cloud cover

Which of the following is of great importance to the existence of plants?

A. Metal scarps

B. Industrial effluent

C. Carbon (IV) oxide

D. Carbon (II) oxide

Which of the following is likely to be found in an oasis in the Sahara Desert?

A. Raffia palm

B. Oil palm

C. Date palm

D. Dum palm

A major characteristic of an urban settlement is that it is?

A. industrialized

B. limited in function

C. homogenous

D. heterogeneous