Across
1
Landform where river meets the sea
4
Largest ocean on Earth
5
Wearing away of land by water or wind
6
Goods sold to another country
7
Dry land with little rainfall
8
Long-term weather patterns of an area
9
Mountain that can erupt with lava
10
Flat grassland in tropical regions
Down
2
One of seven major landmasses
3
Cold treeless Arctic plain
10
Largest hot desert in the world
11
Deep narrow valley with steep sides
12
Piece of land jutting into the sea