Across
1
Ridge of rock or coral near the surface
3
Total number of people in an area
4
Cold treeless Arctic plain
6
Half of the Earth
7
Long-term weather patterns of an area
8
Largest hot desert in the world
Down
2
Imaginary line around the middle of Earth
5
Ocean between Americas and Europe/Africa
9
Dry land with little rainfall
10
Goods sold to another country