Across
1
Where river meets the sea
4
Deep narrow valley with steep sides
5
Seasonal heavy rainfall
6
Tool for finding directions
8
Flat elevated area of land
10
Physical features of land
Down
2
Total number of people in an area
3
Region near the equator
7
Region surrounding the North Pole
9
Wearing away of land by water or wind
11
Largest river in South America