Across
1
Ridge of rock or coral near the surface
3
Seasonal heavy rainfall
5
Vast body of salt water
6
Long-term weather patterns of an area
8
Large slow-moving mass of ice
9
Region between the two tropic lines
11
Region surrounding the North Pole
Down
2
Wearing away of land by water or wind
4
Height above sea level
7
Line dividing two countries
10
Low area between mountains
12
Large area covered with trees