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Population
In this lesson, you will learn about the concept of population and discover how a country’s population size affects its economic development and the environment.
成績7 – 10
作者: Kalmár Vanda
審稿人: Dormány Gábor, Jóri Johanna
圖形的: Patai Regina
程序員: Gálea Patrik
關鍵詞
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