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13 Cards in this Set
- Front
- Back
Primary Succession
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succession that occurs in an area in which no trace of a previous community is present.
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Secondary Succession
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type of succession that occurs in an area that was only partially destroyed by disturbances.
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Canopy
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dense covering formed by the leafy tops of tall rain forest trees.
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Understory
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layer in a rain forest found underneath the canopy formed by shorter trees and vines.
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Deciduous
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term used to refer to a type of tree that sheds its leaves during a particular season each year.
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Coniferous
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term used to refer to trees that produce seed-bearing cones and have thin leaves shaped like needles.
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Humus
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material formed from decaying leaves and other organic matter.
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Taiga
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biome with long cold winters and a few months of warm weather; dominated by coniferous evergreens; also called boreal forest.
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Permafrost
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layer of permanently frozen subsoil found in the tundra.
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Photic Zone
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sunlight region near the surface of water.
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Aphotic Zone
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dark layer of the oceans below the photic zone where sunlight does not penetrate.
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Wetland
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ecosystem in which water either covers the soil or is present at or near the surface for at least part of the year.
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Estuary
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kind of wetland formed where a river meets the ocean
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