The use of water closet and septic tanks is preferred to ...
The use of water closet and septic tanks is preferred to the use of bucket and pit latrines because
it is cost effective
contaminated faeces are completely kept away from flies
the water for flushing contains chlorine which kills the germs
It prevents flies from breeding
Correct answer is B
No explanation has been provided for this answer.
The probability of a baby being a boy or a girl depends on the contribution of the ...
A boy fond of swimming in a pond finds himself passing urine with traces of blood. He is likely...
An example of a filter -feeding animal is ...
Reading the verdict of a case by a magistrate is an example of ...
Liver destroys old red blood cells to produce digestive substance called ...
In the experiment, the layer of oil serves to prevent water loss ...
Which of the following resources cannot be renewed? ...
The importance of courtship in animals includes the following except ...