Vocabulary
The population pyramid of Russia features a dramatic hollow or missing age cohort around ages 75–80, reflecting the catastrophic loss of life during this 20th century event.
World War II
This population pyramid shows an anomaly, the reason for this strange structure is...
war
What is the formula for net migration?
In migrants - Out migrants
Two countries that are currently in stage 4 of the DTM (Zero population growth or declining populations)
US, France, Canada, China, Australia, Spain, Netherlands, Argentina, Uruguay
A sudden bulge in the middle-aged cohort of the U.S. population pyramid reflects this specific post-World War II demographic event.