Across
1
Long-term weather patterns of an area
6
Distance east or west of prime meridian
8
Large natural stream of water
10
Largest river in South America
12
Seasonal heavy rainfall
13
Half of the Earth
Down
2
Large slow-moving mass of ice
3
Total number of people in an area
4
Mountain that can erupt with lava
5
Low area between mountains
7
Large area covered with trees
9
Region surrounding the North Pole
11
Chain or group of islands