64
Lesson 64 of 84 · U.S. Regions
Cross-Country Journey: Region by Region
Population density describes how many people live in an area. Tokyo, New York, and Mumbai are densely populated; Siberia and the Sahara are nearly empty.
Key Facts
1
Geography affects how people live.
2
Earth has seven continents.
3
There are five major oceans.
Check Your Understanding
Question 1
1 of 2Which is the largest ocean?