Across
1
Wearing away of land by water or wind
4
City that is seat of government
6
Dry land with little rainfall
7
Largest river in South America
8
Steep rock face at edge of land
9
Mountain that can erupt with lava
12
Goods sold to another country
Down
2
Region near the equator
3
Largest hot desert in the world
4
Deep narrow valley with steep sides
5
Chain or group of islands
10
Vast body of salt water
11
Piece of land jutting into the sea
13
Large natural elevation of earth