Across
1
Cold treeless Arctic plain
5
Line dividing two countries
6
Large area covered with trees
7
Piece of land jutting into the sea
8
Wearing away of land by water or wind
9
Region between the two tropic lines
Down
2
Ocean between Americas and Europe/Africa
3
Seasonal heavy rainfall
4
Where river meets the sea
6
Narrow sea inlet between cliffs
8
Imaginary line around the middle of Earth