Question

Given the following formula:

​Population change = (Births + Immigration) − (Deaths + emigration)
​ What are two ways that the rate of the global population change can be reduced?

Answer 1

Unless extraterrestrial humans enter Earth or people leave to inhabit another planet, net global immigration and emigration are both zero. Thus, to reduce the rate of global population change, the number of births must be reduced or the number of deaths must be increased.