Term
|
Definition
| dynamic processes by which the biological community exchanges and transforms energy and materials |
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|
Term
| movements of materials btwn the abiotic and biotic components of ecosystems are tied to _________ |
|
Definition
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|
Term
net primary production
(NPP) |
|
Definition
| a measure of the influx of materials and energy in a community |
|
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Term
|
Definition
| movement of matter among Earth's compartments is caused by processes that are biological, geological, and chemical |
|
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Term
|
Definition
| total amount of an element or molecule in a given compartment |
|
|
Term
|
Definition
| flow of an element into or out of a given compartment |
|
|
Term
| all of the materials contained in the bodies of living organisms are ultimately derived from __________ |
|
Definition
| abiotic sources, either atmospheric gases or mater that is dissolved in water |
|
|
Term
|
Definition
metabolic process of breaking nitrogen into ammonium
*done by microbes in terrestrial and aquatic ecosystems |
|
|
Term
|
Definition
reverse cycle of nitrogen fixation
*returns nitrogen fas to the atmosphere |
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|
Term
|
Definition
nutrient-stimulated increases in primary productivity
*can lead to dead zones |
|
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Term
|
Definition
| regions in aquatic ecosystems that are devoid of aquatic life because eutrophication has resulted in severe oxygen depletion |
|
|
Term
| distribution of wavelength emitted by an object depends on its __________ |
|
Definition
|
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Term
|
Definition
| the warming of Earth that results from retention of heat in its atmosphere; caused by the presence of greenhouse gases in the atmosphere |
|
|
Term
|
Definition
| components of the atmosphere that absorb strongly in infrared wavelength |
|
|
Term
|
Definition
| processes by which ecosystems maintain resources that benefit human society |
|
|
Term
| with respect to matter, Earth is a(n) _________ system |
|
Definition
|
|
Term
| with respect to energy, Earth is a(n)_________ system |
|
Definition
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