JAMB - Economics (1998 - No. 3)
Given that
B = Births
D = Death
X = Emigrants
M = Immigration
The population of a country over a period of time will rise if?
B = Births
D = Death
X = Emigrants
M = Immigration
The population of a country over a period of time will rise if?
B = D and X > M
B - D = O and M > X
D - B = O and M = X
X > M and D > B