Which of the following is one of the reasons why the study of population geography is especially important?
Group of answer choices

Virtually all global population growth is concentrated in developing countries.

Overpopulation is a threat in every country on the planet.

Geographers know that the relationship between population and Earth's resources is sustainable.

About the same number of people are alive at this time than have ever been in history.

Geographers want to know why the world's population has increased more slowly during the second half of the twentieth century.