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Chapter 21

Biology Chapter 21 Section 1

TermDefinition
biome a large region characterized by specific type of climate that is used as an energy source
tundra a treeless plain that is located in the arctic or antarcitcic and that is characterized by very low winter temperatures;short, cools usmmers; and egetation tat consists of grases lichens and pereenial herbs
permafrost in arctic regions the permanaently frozen layer of soil or subsoil
tropical forest a forsest of jungle near the equstor that is characterizedby large amounts of rain and little variation in temperature and that contains the greatest know diversity of organisms on Earth
canopy the layer treetops that shade the forest floor
epiphyte a plant that uses another plant for support, but not for nourishment
coniferous tree
dedacuous tree describes trees that lose their leaves at the end of the growing season
temperate decidouos forest a forest or biome that is characterized by trees that shed their leaves in the fall
taiga a region of evergreen, conciferous forsed below the artci and subarctic tundra regions
temperate grassland a community (or biome) that is dominated by grasses, has few trees, and is characterized by cold winters and rainfall that is intermediate between that of a forest and a desert
savanna a plain full of grasses and scattered trees and shrubs; found in tropical and subtropical habitats and mainly in regions with a dry climate, such as East Africa
chaparral a type of vegetation that includes broad-leafed evergreen shrubs and that is located in areas with hot, dry summers and mild, wet winters
desert a region that has little or no vegetation, long periods without rain, and extreme temperatures; usually found in warm clmates
Created by: cordier.marie
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