Across
1
Half of the Earth
2
Largest river in South America
7
Low-lying land surrounded by higher ground
8
Vast body of salt water
9
Cold treeless Arctic plain
10
Landform where river meets the sea
Down
2
Height above sea level
3
One of seven major landmasses
4
Largest ocean on Earth
5
Physical features of land
6
Area where water covers the soil