Respuesta :
The total fertility rate necessary to keep the population constant is approximately equal to: 2.1
For a fertility rate to remain in a stable or constant position, it has to remain in the ratio of 2:1.
What is fertility rate?
This is the number of children that were born to the women of a particular age at a specific period.
This is a very good determinant of the fertility growth rate of the nation. Women that are of the same age rate is used to determine this.
Read more on fertility rate here: https://brainly.com/question/5989597