Across
1
Wearing away of land by water or wind
4
Largest hot desert in the world
6
Long-term weather patterns of an area
7
Total number of people in an area
11
Half of the Earth
12
Body of water surrounded by land
Down
2
Low area between mountains
3
Line dividing two countries
5
Mountain that can erupt with lava
8
Dry land with little rainfall
9
Seasonal heavy rainfall
10
Land surrounded by water on three sides
13
Narrow sea inlet between cliffs
14
Vast body of salt water
15
Raised area of land, smaller than a mountain