Across
1
Total number of people in an area
6
Largest hot desert in the world
7
Goods brought in from another country
8
Deep narrow valley with steep sides
9
Ridge of rock or coral near the surface
10
Large natural stream of water
11
Low-lying land surrounded by higher ground
Down
2
Distance north or south of equator
3
Dry land with little rainfall
4
One of seven major landmasses
5
Large area covered with trees
12
Largest river in South America
13
City that is seat of government