Across
1
Wearing away of land by water or wind
4
Region surrounding the North Pole
6
Total number of people in an area
7
Region near the equator
Down
2
Narrow sea inlet between cliffs
3
Deep narrow valley with steep sides
5
Mountain that can erupt with lava
8
Line dividing two countries
9
Landform where river meets the sea
10
Distance east or west of prime meridian