Across
1
Largest ocean on Earth
3
Cold treeless Arctic plain
5
Line dividing two countries
7
Long-term weather patterns of an area
10
Area where water covers the soil
Down
2
Imaginary line around the middle of Earth
4
Total number of people in an area
6
Distance east or west of prime meridian
7
Tool for finding directions
8
Height above sea level
9
Ridge of rock or coral near the surface