Across
1
Deep narrow valley with steep sides
2
Goods sold to another country
4
Largest hot desert in the world
8
Total number of people in an area
9
Dry land with little rainfall
13
Wearing away of land by water or wind
Down
2
Where river meets the sea
3
Region between the two tropic lines
5
Low-lying land surrounded by higher ground
6
Land surrounded by water on three sides
7
Ocean between Americas and Europe/Africa
10
Narrow sea inlet between cliffs
11
Mountain that can erupt with lava
12
Tool for finding directions