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lesson 3

TermDefinition
Biome a large naturally occurring community of flora and fauna occupying a major habitat, e.g., forest or tundra.
climate the weather conditions prevailing in an area in general or over a long period.
desert The desert biome is an ecosystem that forms due to the low level of rainfall it receives each year. Deserts cover about 20% of the Earth.
rain forest The tropical rainforest biome is an ecosystem that covers about 7% of the Earth's surface.
emergent layer The tallest trees are the emergents, towering as much as 200 feet above the forest floor with trunks that measure up to 16 feet around.
canopy the uppermost trees or branches of the trees in a forest, forming a more or less continuous layer of foliage.
understory a layer of vegetation beneath the main canopy of a forest.
grassland a large open area of country covered with grass, especially one used for grazing.
savanna a grassy plain in tropical and subtropical regions, with few trees.
deciduous tree deciduous is something that sheds after a period of time
boreal forest biome characterized by coniferous forests consisting mostly of pines, spruces and larches.
ciniferous tree mostly evergreen trees and shrubs having usually needle-shaped or scalelike leaves
tundra A cold, treeless, usually lowland area of far northern regions. The lower strata of soil of tundras are permanently frozen
permafrost Permafrost is soil, rock or sediment that is frozen for more than two consecutive years
Created by: Katiegirl28!