Across
1
Line dividing two countries
3
Flat grassland in tropical regions
4
Ridge of rock or coral near the surface
7
Physical features of land
Down
1
Low-lying land surrounded by higher ground
2
Large natural stream of water
5
Imaginary line around the middle of Earth
6
Land surrounded by water
8
Chain or group of islands
9
Distance east or west of prime meridian
10
Where river meets the sea