Across
1
Chain or group of islands
7
City that is seat of government
8
Distance east or west of prime meridian
9
Wearing away of land by water or wind
10
Cold treeless Arctic plain
Down
1
Largest river in South America
2
Line dividing two countries
3
Raised area of land, smaller than a mountain
4
Seasonal heavy rainfall
5
Landform where river meets the sea
6
Mountain that can erupt with lava
7
Piece of land jutting into the sea
11
Physical features of land
12
Dry land with little rainfall