Across
1
Largest river in South America
4
Ridge of rock or coral near the surface
5
Distance north or south of equator
6
Flat elevated area of land
9
Deep narrow valley with steep sides
10
Low-lying land surrounded by higher ground
11
Landform where river meets the sea
12
Land surrounded by water
13
Region between the two tropic lines
Down
1
Ocean between Americas and Europe/Africa
2
Mountain that can erupt with lava
3
Imaginary line around the middle of Earth
7
Flat grassland in tropical regions
8
Goods sold to another country