Across
1
Low area between mountains
4
Region near the equator
5
Wearing away of land by water or wind
7
Body of water surrounded by land
9
Ocean between Americas and Europe/Africa
11
Large natural elevation of earth
12
Land surrounded by water
13
Where river meets the sea
15
Distance north or south of equator
Down
2
One of seven major landmasses
3
Imaginary line around the middle of Earth
6
Total number of people in an area
8
Largest river in South America
10
Flat elevated area of land
14
Half of the Earth