Biomes
aquatic: freshwater
A biome characterized by having a low salt concentration; includes ponds and lakes, rivers and streams, and wetlands
aquatic: marine
This biome covers about three-fourths of the earth and includes the oceans, coral reefs, and estuaries
taiga
a biome characterized by evergreen trees, with long and cold winters and only short summers
desert
a biome characterized by extreme dryness; cold ones experience cold winters and hot summers, while hot ones are uniformly warm throughout the year
mediterranean
a biome characterized by long, hot, and dry summers and cool, damp winters; the plant life includes characteristic short evergreen trees and shrubs with leathery leaves
temperate deciduous forest
a biome characterized by moderate winters and rainfall; trees are mostly evergreen or deciduous, dropping their leaves in winter
temperate grassland
a biome characterized by perennial grasses and other nonwoody plants; in North America, the prairies are examples of grasslands
savanna
a biome characterized by warm temperatures and two seasons (dry and rainy); primary vegetation is grasses, with some shrubs and rare trees
tundra
a biome that occurs in the Arctic and mountain regions; is characterized by low-growing vegetation and a layer of permafrost soil very close to the surface of the soil
tropical forest
biome characterized by warm temperatures and sufficient rainfall to support the growth of trees; may be deciduous or evergreen, depending on the presence or absence of a dry season