Flash Cards

Lesson 3 Biomes

Term Definition
Biome a group of ecosystems with similar climates and organisms
Climate the average annual conditions of temperature, precipitation, winds, and clouds in an area
Desert a dry region that on average receives less than 25 centimeters of precipitation per year
Rain Forest a forest that receives at least 2 meters of rain per year, mostly occurring in the tropical wet climate zone
Emergent Layer the tallest layer of the rain forest that receives the most sunlight
Canopy a leafy roof formed by tall trees in a rain forest
Understory a layer of shorter trees and vines that grows in the shade of a forest canopy
Grassland an area populated mostly by grasses and other nonwoody plants that gets 25-75 centimeters of rain each year
Savanna a grassland located close to the equator that may include shrubs and small trees and receives as much as 120 centimeters of rain per year
Deciduous Tree a tree that sheds its leaves during a particular season and grows new ones each year
Tundra an extremely cold, dry biome climate region characterized by short, cool summers and bitterly cold winters
permanently frozen soil found in the tundra biome climate region

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