Across
1
Deep narrow valley with steep sides
4
Where river meets the sea
5
Tool for finding directions
7
Landform where river meets the sea
8
Piece of land jutting into the sea
10
Total number of people in an area
11
Largest ocean on Earth
12
Flat grassland in tropical regions
13
Ocean between Americas and Europe/Africa
Down
2
Distance east or west of prime meridian
3
Chain or group of islands
6
Largest river in South America
9
City that is seat of government