The number of students that gave responses to this question was high although their responses to the definitions of birth rate and natural growth rate were inadequate. Reasons as to why people emigrate were correctly given by most candidates who attempted this question.

Birth rate is defined as the number of births per thousand of the population in a year while natural growth rate is the difference between birth rate and death rate.

There is over population if the population is too large relative to other resources such as land and capital; whereas optimum population is such a population which when combined with existing resources yields the highest income per head

Reasons why people migrate will include the following:


(1) To study and acquire skills
(2) To look for better job opportunities
(3) To escape from natural disasters e.g. floods, earthquakes, landslides, draught etc.
(4) To escape from religious, political and social upheavals
(5) To live in a more suitable climate
(6) Some may move so as to seek for a change and adventure.