food chain
ecosystem
carbon cycle
hydrological cycle
Correct answer is B
No explanation has been provided for this answer.
Which of the following in the lower atmosphere is of little use to man,plants and animals?
carbon dioxide
nitrogen
oxygen
argon
Correct answer is D
No explanation has been provided for this answer.
The acacia tree is commonly found in the
coniferous forest
mediterranean lands
savannah lands
mangroove forest
Correct answer is C
No explanation has been provided for this answer.
Air pollution is caused by all the following except
evapo-transpiration
fumes motor vehicles
discharge of gasses from factories
volcanic cruptions
Correct answer is A
No explanation has been provided for this answer.
Which of the following is a warm ocean current?
the mozambique current
the californian current
the benguela current
the west wind drift
Correct answer is A
No explanation has been provided for this answer.