2

Ecosystems

4

Ecosystems Level 4

4

Montane Forest

2

Frozen Ground! Tundra

2

Evergreen Forests! Taiga

4

Desert

4

Savanna

2

Warm Grasslands! Savanna

2

Treeless Plains! Steppe

4

Tundra

2

Snow and Ice! Polar

2

Four Seasons! Deciduous Forest

3

Lakes of the World

2

Hot and Wet! Tropical Rainforest

4

Tropical Rainforest

4

Steppe

4

Aquatic

4

Deciduous Forest

4

Taiga

2

Water Everywhere! Aquatic

2

Hot and Dry! Desert