Across
1
Total number of people in an area
5
Goods sold to another country
6
Deep narrow valley with steep sides
7
Where river meets the sea
10
Ocean between Americas and Europe/Africa
11
Long-term weather patterns of an area
13
Cold treeless Arctic plain
Down
2
Dry land with little rainfall
3
Largest river in South America
4
Land surrounded by water
5
Wearing away of land by water or wind
8
One of seven major landmasses
9
Largest ocean on Earth
12
Distance east or west of prime meridian