Across
1
Half of the Earth
6
Low-lying land surrounded by higher ground
7
Large area covered with trees
8
Large natural elevation of earth
12
Distance north or south of equator
Down
2
Cold treeless Arctic plain
3
Area where water covers the soil
4
Wearing away of land by water or wind
5
Visual representation of an area
9
Imaginary line around the middle of Earth
10
Piece of land jutting into the sea
11
Large natural stream of water