apes study guides

♻️  Unit 8: Aquatic and Terrestrial Pollution

3.7 Total Fertility Rate



⏱️  1 min read

written by

Karla Jauregui Sandoval

karla jauregui sandoval

A factor that influences the size of the human population size is total fertility rate. Total fertility rate is the average number of children born to a  woman in her reproductive age. The total fertility rate has been declining in recent years although the TFR in developing countries remains higher than the replacement fertility rate (the total fertility rate at which a population replaces itself from one generation to the next without migration) of 2.1. The TFR may be decreased by access to birth control, education, women having jobs, or family planning. 


Image Courtesy of Wikimedia

Infant Mortality Rate 

Infant mortality rate of the number of children that die before the age of one. Some reasons for this can be the lack of sanitation, contraceptives,  no medical technology or not any access to healthcare. Crude birth rate is the number of births per 1000 people. Crude death rate is the number of deaths per 1000 people. 


A pediatric nurse checking recently born triplets in an incubator at ECWA Evangel Hospital, Jos, Nigeria

Image Courtesy of Wikimedia

Emigration and Immigration 

Other factors that influence the size of a country's population are emigration and immigration. Emigration refers to the number of people leaving the country which decreases a population size. Immigration is the number of people entering a country which will increase the population size. (Hint: Think- E stands for Exit.)

🎥 Watch this video on total fertility rate.

continue learning

Slide 1 of 11

Join Our Community

Fiveable Community students are already meeting new friends, starting study groups, and sharing tons of opportunities for other high schoolers. Soon the Fiveable Community will be on a totally new platform where you can share, save, and organize your learning links and lead study groups among other students!🎉

Fiveable Logo

2550 north lake drive
suite 2
milwaukee, wi 53211

92% of Fiveable students earned a 3 or higher on their 2020 AP Exams.

*ap® and advanced placement® are registered trademarks of the college board, which was not involved in the production of, and does not endorse, this product.

© fiveable 2020 | all rights reserved.