This document is a correction key for a common test on the topic of demographic changes and population growth. It provides the answers to the test in three parts: Part 1 (40 points) contains multiple choice and fill-in-the-blank questions about population statistics, growth rates, and causes of urbanization. Part 2 (40 points) evaluates students' argumentative essays on population control, assessing handwriting, content, and language. Opposing views are acceptable if logically reasoned. Part 3 (20 points) contains another set of multiple choice questions to complete the 100-point exam.