14
Lesson 14 of 84 · Geography
Coral Reefs: Underwater Ecosystems
Grasslands and savannas are vast areas of grass with few trees. The African savanna supports lions, elephants, and giraffes; the American Great Plains once hosted huge bison herds.
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?