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Ch.2:L.3
Chapter 2 Lesson 3
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 a 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 |
Savanna | A grassland located close to the equator that may include shrubs and small trees and receives as much as 120 centimeters of rain each year |
Deciduous Tree | A tree that sheds its leaves during a particular season and grows new ones each year |
Boreal Forest | Dense forest of evergreens located in that upper regions of the northern hemisphere |
Coniferous Tree | A tree that produces its seeds in cones and that has needle-shaped leaves coated in a waxy substance to reduce water loss |
Tundra | An extremely cold, dry biome climate region characterized by short, cool summers and bitterly cold winters |
Permafrost | Permanently frozen soil found in the tundra biome climate region |