Soil erosion CANNOT be controlled by
planting cover crops
contouring of sloping ground
terracing of slopes
laying of mulch
burning of bush
Correct answer is E
No explanation has been provided for this answer.
Tsetse fly is harmful to man because it is associated with the spread of
river blindness
malaria
sleeping sickness
leprosy
dysentry
Correct answer is C
No explanation has been provided for this answer.
Which of the following is NOT caused by bacteria?
Cholera
Gonorrhoea
Tuberculosis
Onchoceriasis
Typhoid
Correct answer is D
Onchocerciasis is another name for river blindness. It is caused by the NEMATODE, Onchocerca volvulus.
B, A, AB
O, A, B
B, AB, AB
A, O, A
Correct answer is D
No explanation has been provided for this answer.
The DNA molecule is a chain of repeating
nucleosides
nitrogenous bases
sugar phosphates
nucleotides
Correct answer is D
No explanation has been provided for this answer.