Term
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Definition
| normal, gradual changes that occur in types of species in an area |
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Term
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Definition
| the first species to inhabit an area |
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Term
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Definition
| a stable community of plants that has been somewhat undisturbed |
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Term
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Definition
| large geographic areas that have similar climates and ecosystems |
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Term
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Definition
a cold, dry, treeless region. Precipitation less than 25 cm per year.
Temperature about -12Co |
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Term
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Definition
a cold, forest region dominated by cone-bearing evergreen trees.
Precipitation 35 to 100 cm per year. |
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Term
| temperate deciduous forest |
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Definition
areas dominated by deciduous trees which lose their leaves.
Precipitation 75 to 150 cm.
Temperature below freezing to 30Co |
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Term
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Definition
Temperature 9 to 12 Co.
Precipitation 200 to 400 cm.
Needlelike leaves on trees, including fir, cedar, and spruce. |
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Term
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Definition
Warm temperatures, wet weather and lush plant growth. Near the equator. Temperature 25 Co.
Precipitation 200 to 600 cm. |
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Term
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Definition
The driest biome.
Precipitation less than 25 cm per year. Little plant life. Ranges from hot to cold temperatures. |
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Term
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Definition
| Have a dry season so that trees do not develop. Precipitation 25 to 75 cm. |
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Term
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Definition
| ground frozen all year long |
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Term
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Definition
| regions that are wet most of the year...swamps, bogs. |
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Term
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Definition
| formed over long period of time from skeletons of corals. |
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Term
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Definition
| the portionof the shorline that is covered with water at high tide and exposed to the air during low tide. |
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Term
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Definition
| the area where a river meets an ocean and contains a mixture of freshwater and salt water. |
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