Across
1
Distance north or south of equator
2
Low area between mountains
5
Low-lying land surrounded by higher ground
6
Vast body of salt water
7
Wearing away of land by water or wind
9
Goods brought in from another country
11
Flat elevated area of land
12
Ocean between Americas and Europe/Africa
Down
2
Mountain that can erupt with lava
3
Region between the two tropic lines
4
Large natural stream of water
8
One of seven major landmasses
10
Largest river in South America