The World's Biomes
by Alissa Lustgarten
1. Desert
1.1. Hot and Dry Desert
1.2. Semiarid Desert
1.3. Coastal Desert
1.4. Cold Desert
2. Tundra
2.1. Artic
2.2. Alpine
3. Forest
3.1. Tropical Forest
3.2. Temperate Forest
3.3. Boreal Forest
4. Grassland
4.1. Savanna
4.2. Temperate Grassland
4.3. Steppes
5. Aquatic
5.1. Freshwater
5.2. Marine