2
Lesson 2 of 84 · Global Connections
The United Nations
The five oceans — Atlantic, Pacific, Indian, Arctic, and Southern — cover about 71 percent of Earth's surface. They regulate climate, provide food, and enable international trade.
Key Facts
1
Natural resources are limited.
2
Geography affects how people live.
3
Earth has seven continents.
Check Your Understanding
Question 1
1 of 2What is the difference between climate and weather?