Across
1
Cold treeless Arctic plain
4
Region between the two tropic lines
5
Physical features of land
6
Long-term weather patterns of an area
Down
2
Distance east or west of prime meridian
3
Height above sea level
7
Wearing away of land by water or wind
8
Imaginary line around the middle of Earth
9
Low-lying land surrounded by higher ground
10
Distance north or south of equator
11
Where river meets the sea
12
Region near the equator