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Ch. 20 Earth's Ecosy
The earth's ecosystems
| Term | Definition |
|---|---|
| abiotic | describes nonliving factors in the environment |
| biome | large region with specific climates, certain plants, and animals |
| savanna | tropical grassland biome with scattered clumps of trees |
| desert | hot/dry biome with organisms in high temperatures without rains |
| tundra | far-northern biome characterized by long, cold winters; permafrost |
| permafrost | permanently frozen ground below the soil surface in the arctic tundra |
| marine | describes an ecosystem based on salty water |
| phytoplankton | microscopic photosynthetic organism that floats near the surface |
| zooplankton | protozoa that consume, form the base of the ocean's food web |
| estuary | area where fresh water from streams/rivers spills into the ocean |
| tributary | a small stream or river that flows into a larger one |
| littoral zone | the zone of a lake/pond closest to the edge of the land |
| open-water zone | from the littoral zone across the top only as deep as light reaches |
| deep-water zone | zone of a lake/pond below the open-water zone with no light |
| wetland | area of land where water level is near or above ground |
| marsh | treeless wetland ecosystem with plants as cattails and rushes grow |
| swamp | a wetland ecosystem in which trees and vines grow |
Created by:
swhite2015
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