Across
1
Distance north or south of equator
4
Tool for finding directions
5
Low area between mountains
6
Large natural stream of water
9
Wearing away of land by water or wind
10
Largest river in South America
Down
2
Ocean between Americas and Europe/Africa
3
Land surrounded by water on three sides
4
Long-term weather patterns of an area
7
Dry land with little rainfall
8
Imaginary line around the middle of Earth
9
Goods sold to another country
11
Total number of people in an area
12
One of seven major landmasses
13
Flat grassland in tropical regions