Across
1
Distance east or west of prime meridian
5
Deep narrow valley with steep sides
7
Largest river in South America
10
Goods brought in from another country
11
Imaginary line around the middle of Earth
12
Line dividing two countries
13
Large area covered with trees
Down
2
Area where water covers the soil
3
Seasonal heavy rainfall
4
Total number of people in an area
6
Goods sold to another country
8
Vast body of salt water
9
Wearing away of land by water or wind
14
Landform where river meets the sea
15
Cold treeless Arctic plain