Across
1
Wearing away of land by water or wind
5
Largest hot desert in the world
6
Line dividing two countries
10
Half of the Earth
Down
2
Largest river in South America
3
Raised area of land, smaller than a mountain
4
Ridge of rock or coral near the surface
7
Where river meets the sea
8
Area where water covers the soil
9
Region near the equator