Across
1
Body of water surrounded by land
2
Largest river in South America
3
Low-lying land surrounded by higher ground
4
Chain or group of islands
10
Total number of people in an area
Down
2
Ocean between Americas and Europe/Africa
5
Large natural stream of water
6
Landform where river meets the sea
7
Steep rock face at edge of land
8
Region between the two tropic lines
9
Mountain that can erupt with lava
11
Distance north or south of equator
12
Deep narrow valley with steep sides