2
Treeless Plains! Steppe
2
Warm Grasslands! Savanna
4
Tundra
2
Snow and Ice! Polar
2
Four Seasons! Deciduous Forest
4
Deciduous Forest
4
Steppe
4
Taiga
4
Ecosystems Level 4
2
Hot and Dry! Desert
4
Tropical Rainforest
2
Evergreen Forests! Taiga
4
Savanna
2
Water Everywhere! Aquatic
4
Aquatic
4
Montane Forest
2
Frozen Ground! Tundra
2
Hot and Wet! Tropical Rainforest
4
Polar