Across
1
Largest hot desert in the world
5
Large natural elevation of earth
7
Landform where river meets the sea
8
Large area covered with trees
11
Wearing away of land by water or wind
Down
2
Largest river in South America
3
Largest ocean on Earth
4
Low area between mountains
6
Total number of people in an area
9
Dry land with little rainfall
10
Deep narrow valley with steep sides
12
Long-term weather patterns of an area