2

Ecosystems

4

Ecosystems Level 4

4

Polar

4

Montane Forest

4

Savanna

2

Hot and Dry! Desert

2

Frozen Ground! Tundra

4

Aquatic

4

Taiga

2

Evergreen Forests! Taiga

4

Steppe

4

Tropical Rainforest

2

Warm Grasslands! Savanna

2

Water Everywhere! Aquatic

3

Lakes of the World

4

Tundra

2

Snow and Ice! Polar

4

Desert

2

Hot and Wet! Tropical Rainforest

2

Treeless Plains! Steppe

2

Four Seasons! Deciduous Forest

4

Deciduous Forest