Across
1
Long-term weather patterns of an area
6
Ridge of rock or coral near the surface
7
Large slow-moving mass of ice
8
Deep narrow valley with steep sides
10
Piece of land jutting into the sea
13
Chain or group of islands
14
Height above sea level
Down
2
Largest hot desert in the world
3
Wearing away of land by water or wind
4
Flat elevated area of land
5
Vast body of salt water
9
Large natural stream of water
11
Line dividing two countries
12
Total number of people in an area
15
Distance north or south of equator