Across
1
Goods brought in from another country
4
Tool for finding directions
7
Imaginary line around the middle of Earth
9
Region between the two tropic lines
10
Cold treeless Arctic plain
11
Landform where river meets the sea
12
Line dividing two countries
13
Low area between mountains
Down
2
Half of the Earth
3
Distance east or west of prime meridian
5
Dry land with little rainfall
6
Mountain that can erupt with lava
8
Low-lying land surrounded by higher ground