Across
1
Large natural stream of water
5
Land surrounded by water on three sides
6
Deep narrow valley with steep sides
8
Distance east or west of prime meridian
9
Large body of water partly enclosed by land
11
Imaginary line around the middle of Earth
Down
2
Flat grassland in tropical regions
3
Large area covered with trees
4
Largest hot desert in the world
7
Low area between mountains
10
Vast body of salt water