Across
1
Piece of land jutting into the sea
5
Large body of water partly enclosed by land
6
Vast body of salt water
7
Cold treeless Arctic plain
8
Largest ocean on Earth
9
Deep narrow valley with steep sides
11
One of seven major landmasses
Down
2
Large slow-moving mass of ice
3
Total number of people in an area
4
Height above sea level
10
Ridge of rock or coral near the surface