Which of these physiological variations is sex-linked?
albinism
blood groups
sickle-cell anaemia
haemophilic condition
Correct answer is D
No explanation has been provided for this answer.
Tropical rain forests can be conserved by the following practices except?
agroforestry
deforestation
shifting cultivation
crop rotation
Correct answer is B
Deforestation leads to a huge loss of biodiversity. About 80% of the global biodiversity is located in tropical rainforests.
Use of powerful tools for felling trees
regrowing of forest trees
clearance of forests for cash crops
use of fire or hunting in forests
Correct answer is B
No explanation has been provided for this answer.
The following are natural resources except
rubber
soil
water
cellophane
Correct answer is D
No explanation has been provided for this answer.
An abandoned refuse dump may be a good site for an intending vegetable farmer because
very little manual work would be done by the farmer
microbial activity had released nutrients into the soil
the roots of vegetable seedlings easily get enough light
refuse dumps possess plenty of gas which scares away rodents
Correct answer is B
No explanation has been provided for this answer.