The diagram below represents an incubator. Study it carefully and use it to answer questions (a) - (e).

(a) List four components of the incubator.

(b) Explain two problems that can affect the proper functioning of any two of the components listed in (a).

(c) State three steps that should be taken to ensure that the eggs hatch at about the same time.

(d)(i) State the type of housing system adopted for breeding fowls to ensure a high rate of egg fertility.
(ii) Give reason for your answer.

(e) State two activities normally carried out by the farmer in the hatchery after hatching