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| condition of earth's atmosphere at a particular time and place. |
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| average, year-after-year conditions of tempature and precipitation in a particular region. |
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| natural situation in which heat is retained in earth's atmosphere by carbon dioxide, methane, water vapor, and other gases. |
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| cold climate zone where the sun's rays strike earth at a very low angle. |
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| moderate climate zone between the polar zones and the tropics. |
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| warm climate zone that receives direct or nearly direct sunlight year round. |
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| biological influence on organisms within an ecosystem. |
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| physical, or nonliving, fator that shapes an ecosystem. |
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| the area where an organism lives, including the biotic and abiotic factors that effect it. |
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| full range of pyhsical and biological conditions in which an organism lives and the way in which the organism uses those conditions. |
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| any nessity of life, such as water, nutrients, liht, food,or space. |
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| competitive exclusion priciple |
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Definition
| ecological rule that states that no two species can occupy the same exact niche in the same habitat at the same time. |
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| interaction in which one organism captures and feeds on another organism. |
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| realtionship in which two species live closely together. |
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| symbiotic realtionship in which both species benefit from the realtionship. |
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| symbiotic realtionship in which one member of the association benefits and the other is neither heleped nor harmed. |
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| symbiotic realtionship in which one organism lives in or on another organism (the host) and consequently harms it. |
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Definition
| symbiotic realtionship in which one organism lives in or on another organism (the host) and consequently harms it. |
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| gradual change in living communities that follows a distrubance. |
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| sucession that occurson surfaces where no soil exists. |
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| first species to populate an area during primary sucession. |
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| succesion following a distrubance that destroys a community without destroying the soil. |
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| grop of ecosystems that have the same climate and dominant communties. |
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| organism's capcity to grow or thrive when subjected to an unfavorable enviromental factor. |
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| organism's capcity to grow or thrive when subjected to an unfavorable enviromental factor. |
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| climate within a small area that differs significantly from the climate of the surrounding area. |
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| dense covering formed by the leafy tops of tall rain forest trees. |
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| layer in a rain forest formed by shoter trees and vines. |
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| term used to refer to a tree that sheds its leaves during a particular season each year. |
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| term used to refer to trees that produce seed-bearing cones and have thin leaves shaped like neddles. |
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| materail formed from decaying leaves and other organic matter. |
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| biome in which the winters are cold but summers are mild enough to allow the ground to thaw. |
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| layer of permanently frozen subsoil in the tundra. |
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| tiny, free-floating organisms that occur in aquatic environments. |
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| population of algae and other small, photosynthetic organisms found near the surface of the ocean and forming part of plankton. |
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| well-lit upper layer of the oceans. |
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| tiny animals that form part of the plankton. |
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| ecosystem in which water either covers the soil or is present at or near the surface of the soil for at least part of the year. |
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| wetlands formed where rivers meet the ocean. |
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| particles of organic material that provide food for organisms at the base of an estuary's food web. |
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| temperate-zone estuary dominated by salt tloerant grasses above the low-tide and by seagrasses under water. |
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| costal wetland dominated by mangroves, salt-tolerant woody plants. |
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| permanently dark layer of the oceans below the photic zone. |
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| prominent horizontal banding of organisms that live in a particular habitat. |
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| marine zone that extends from the low tide mark the end of the continental shelf. |
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| costal ocean community named for its dominant organism-kelp,a giant brown alga. |
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| diverse and productive enviroment named for the animals that make up its primary structure. |
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