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Chapter 2 Lesson 3

Definitions from the Interactive Textbook: Ecology and the Environment

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 2 meters of rain per year, mostly occurring in the tropical wet climate zone.
Emergent layer The tallest layer of the rainforest that receives the most sunlight.
Canopy A leafy root formed by tall trees in a rainforest.
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 non-woody plants that gets 25 to 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.
Boreal forest Dense forest of evergreens located in the 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.
Created by: tschulz



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