Across
1
Long-term weather patterns of an area
3
Low-lying land surrounded by higher ground
6
Total number of people in an area
7
Land surrounded by water
8
Vast body of salt water
10
Mountain that can erupt with lava
11
Large natural elevation of earth
Down
2
Largest river in South America
4
Flat grassland in tropical regions
5
Chain or group of islands
9
Landform where river meets the sea
12
One of seven major landmasses
13
Visual representation of an area