|
|
|
Aquatic |
|
Desert |
|
Forests |
|
Grasslands |
|
Tundra |
|
|
|
|
|
|
Freshwater regions |
|
Low salt concentration-less than 1% |
|
Ponds and lakes |
|
Rivers and streams |
|
Wetlands |
|
Marine regions |
|
Covers 3/4 of the earth’s surface |
|
Coral Reefs |
|
Oceans |
|
Estauries |
|
|
|
|
|
|
Covers
about one fifth Earth’s surface. Rainfall is less than 50 cm/year. |
|
Major types of deserts: |
|
Hot and dry |
|
Coastal |
|
Cold |
|
Semiarid |
|
|
|
|
|
|
Forests occupy 1/3 of Earth’s surface. |
|
Major types of forests: |
|
Tropical |
|
Temperate |
|
Taiga |
|
|
|
|
|
|
Land dominant by grass rather than shrubs. |
|
Divisions of grasslands: |
|
Savannah (tropical grasslands) |
|
Temperate grasslands |
|
|
|
|
|
|
|
|
Tundra is the coldest of all the biomes. |
|
Tuntria means treeless plain. |
|
Types of tundra: |
|
Artic tundra |
|
Alpine tundra |
|
Notes