In which of the following do fishes thrive best?

A. Ocean deeps

B. Continebtal shelf

C. Deep sea plains

D. Continental slopes

E. Ocean trenches

The mean annual range of temperature of a place is obtained by

A. adding the monthly mean temperatures for one year and dividing them by 12

B. adding the lowest temperature for one year to the highest for the year

C. subtracting the lowest mean daily temperature from the highest mean daily temperature for the year

D. adding the mean daily temperatures for one year and dividing by 365

E. subtracting the lowest mean monthly temperature from the highest mean monthly temperature for the year

The energy received from the sun at a particular place is called

A. insolation

B. convection

C. conduction

D. heat wave

E. advection

A radiation fog is likely to develop when there is

A. gradual gain in heat by radiation on clear, clam nights

B. rapid gain of humidity by insolation on calm days

C. rapid loss of heat by radiation on clear, calm nights

D. rapid gain of heat by radiation on clear calm days

E. gradual loss of humidity by evaporation on calm days

''The climate is characterised by an alternate hot, rainly season and cool, dry season. The vegetation consists mostly of tall grass and short trees which are mostly deciduous''The climate being described is the

A. savanna

B. cool temperate (British type)

C. warm temperate (China type)

D. tropical monsoon

E. desert

Long very cold winters, low annual rainfall with 24 hours of darkness in the middle of winter'' The climate being described is the

A. montane type

B. cool temperate western margin type

C. tundra type

D. cool temperate interior type

E. warm temperate western margin type

Sheet erosion can be best be described as the

A. uniform removal of soil from every part of a slope

B. scattering of small soil particles by raindrops

C. removal of soils in concentrated channels

D. detachment and transportation of soil particiles

E. blowing away of surface soil

A vertical cross section of soil layers differing in colour, texture and other characteristics is called

A. podzol

B. soil profile

C. laterite

D. soil slump

E. soil horizon

Which of the following activities will lead to deterioration of the environment?

A. Planting of trees

B. Contour ploughing

C. Afforestatant

D. Creation of shelter belts

E. Overgrazing

Carnivores are important in the food chain because they

A. depend on sunlight for energy

B. feed on both plants and animals

C. feed on animals only

D. feed on plants only

E. bring about microbial action