click below
click below
Normal Size Small Size show me how
science 2
Term | Definition |
---|---|
Abiotic: | The nonliving part of an ecosystem. |
Biodiversity: | An ecosystem that has many different species in that area. |
Biotic: | The living part of an ecosystem. |
Delta: | A landform made of sediment that is deposited where a river flows into an ocean or lake. |
Divide: | A ridge of land that separates one drainage basin or watershed from another. |
Ecosystem: | All the living population and nonliving parts of an environment. |
Eutrophication: | The process by which nutrients in a lake build up over time, causing an increase in the growth of algae. |
Groundwater: | Water that fills the cracks and pores in underground soil and rock layers. |
Habitat: | The place where an organism lives and that provides the things it needs to survive. |
Marsh: | A grassy area covered by a shallow layer or stream of water. |
Meander: | A looping curve formed in a river as it winds through its flood plain. |
Pollution: | A change to the environment that has a negative effect on living things. |
River System: | All of the streams and channels draining a river system. |
Runoff: | Water that flows over the ground surface rather than soaking into the ground. |
Salinity: | The total amount of dissolved salts in a water sample |
Stream: | A channel through which water is continually flowing downhill. |
Swamp: | A flooded forest with trees and shrubs growing in the water. |
Turbidity: | A cloudy condition in water due to suspended silt or organic matter. |
Watershed: | The land area that supplies water to a river system. |
Wetland: | An area of land that is covered with a shallow layer or water during some or all of the year. |
estuary | a coastal inlet or bay where freshwater mixes with salt water |