Across
1
Largest river in South America
5
Long-term weather patterns of an area
7
Imaginary line around the middle of Earth
9
Low area between mountains
Down
2
Flat grassland in tropical regions
3
Ocean between Americas and Europe/Africa
4
Large area covered with trees
6
Mountain that can erupt with lava
8
Large natural stream of water
10
Where river meets the sea
11
Steep rock face at edge of land