Across
1
Ridge of rock or coral near the surface
2
Total number of people in an area
3
Largest hot desert in the world
6
Region surrounding the North Pole
8
Region between the two tropic lines
9
Region near the equator
Down
2
Flat elevated area of land
4
Large natural stream of water
5
Ocean between Americas and Europe/Africa
7
Mountain that can erupt with lava