AP BIOLOGY

Detailed explanation-1: -Stage 1 of the Demographic Transition Model (DTM) is characterized by a low population growth rate due to a high birth rate (number of annual births per one thousand people) and a high death rate (number of annual deaths per one thousand people).

Detailed explanation-2: -No official country in the world is currently in stage 1. There may be small communities of humans that are in stage 1 of the DTM. Some Indigenous groups in the Amazon or Sub-Saharan Africa are in stage one, but not all pre-contact Indigenous peoples have high birth rates and high death rates.

Detailed explanation-3: -Stage 2 of the Demographic Transition Model (DTM) is characterized by a rapid decrease in a country’s death rate while the birth rate remains high. As such, the total population of a country in Stage 2 will rise because births outnumber deaths, not because the birth rate is rising.

Detailed explanation-4: -In Stage 4, birth and death rates are both low, stabilizing the population. These countries tend to have stronger economies, higher levels of education, better healthcare, a higher proportion of working women, and a fertility rate hovering around two children per woman. Most developed countries are in Stage 4.