Across
1
Piece of land jutting into the sea
3
Largest river in South America
4
Tool for finding directions
5
Cold treeless Arctic plain
9
Distance north or south of equator
11
Seasonal heavy rainfall
12
Flat grassland in tropical regions
13
Low area between mountains
Down
2
Total number of people in an area
6
Dry land with little rainfall
7
Deep narrow valley with steep sides
8
Landform where river meets the sea
10
Large slow-moving mass of ice