Lesson 7 of 13
Checkpoint
Show on a big screenFive questions. Try each one.
A planet is much farther from its star than Earth. What happens to its water?
What does the ozone layer do?
About how much of Earth's surface is covered by water?
What is soil made from?
Which planet is the hottest?
0 of 5 answered
Finish the checkpoint to complete this lesson — you can always retry for a better score.