Across
1
Ridge of rock or coral near the surface
3
Goods brought in from another country
4
Largest river in South America
9
Height above sea level
Down
2
Imaginary line around the middle of Earth
5
Steep rock face at edge of land
6
Flat grassland in tropical regions
7
Cold treeless Arctic plain
8
Largest ocean on Earth
10
Area where water covers the soil