Across
1
Line dividing two countries
4
Goods sold to another country
5
Land surrounded by water on three sides
8
Landform where river meets the sea
9
Chain or group of islands
Down
2
Body of water surrounded by land
3
Region near the equator
6
Large natural stream of water
7
Wearing away of land by water or wind
9
Ocean between Americas and Europe/Africa
10
Cold treeless Arctic plain
11
Largest river in South America
12
Ridge of rock or coral near the surface
13
Flat grassland in tropical regions