Answer:
Population pyramids are used by demographers as a tool for understanding the make-up of a given population, whether a city, country, region, or the world. Learning about, using, and understanding these pyramids is an important part of AP Human Geography and AP Environmental Science.
Explanation:
I hope this help
Straw and mud or clay, or otherwise called adobe (uh-dough-bee)
Answer:
1923
i searched it up and it said 1923 on wikipedia
