Across
1
Dry land with little rainfall
3
Deep narrow valley with steep sides
4
Chain or group of islands
7
Body of water surrounded by land
10
Large natural stream of water
11
Where river meets the sea
12
Region between the two tropic lines
Down
2
Area where water covers the soil
5
Large slow-moving mass of ice
6
Half of the Earth
7
Distance north or south of equator
8
Large area covered with trees
9
Physical features of land