6
Lesson 6 of 84 · Regions
The West Region of the U.S.
Tropical rainforests near the equator are the most biodiverse ecosystems. The Amazon alone contains about 10 percent of all species on the planet.
Key Facts
1
Earth has seven continents.
2
There are five major oceans.
3
Climate differs from weather.
Check Your Understanding
Question 1
1 of 2How many continents are there?