Across
1
Half of the Earth
3
Low-lying land surrounded by higher ground
6
Region between the two tropic lines
8
Narrow sea inlet between cliffs
9
Long-term weather patterns of an area
10
Flat grassland in tropical regions
11
Tool for finding directions
15
Where river meets the sea
Down
2
Total number of people in an area
4
Largest hot desert in the world
5
Imaginary line around the middle of Earth
7
Large area covered with trees
12
Land surrounded by water on three sides
13
One of seven major landmasses
14
Land surrounded by water