The greatest problem in the use of solar energy is
the high risk in its usage
its unreliability from day to day and season to season
the high intensity associatated with the sun
the high cost of transporting it for domestic use
its frequency of power failure
Correct answer is B
No explanation has been provided for this answer.
Temperate grasslands are generally important for
mining
floating of logs
animal grazing
processing of meat and cheese
burning of grass for fuel
Correct answer is C
No explanation has been provided for this answer.
The vegetation belt associated with valuable hard wood is the
Sahel Savanna
Tropical rainforest
Coniferous forest
Mediterranean forest
Moutane forest
Correct answer is B
No explanation has been provided for this answer.
Soils of the rainforest are rich in humus because of the
multiple species of trees
dense vegetation cover
large quantity of decayed leaves
absence of sunlight at the surface
heavy rainfall
Correct answer is C
No explanation has been provided for this answer.
The substance that cements soil particles together is
air
nutrients
sand
colloid
loam
Correct answer is D
No explanation has been provided for this answer.