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20 Cards in this Set
- Front
- Back
Phylogenic |
the evolutionary development and diversification of a species or group of organisms, or of a particular feature of an organism |
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Dissolved Oxygen |
refers to microscopic bubbles of gaseous oxygen that are mixed in water and available to aquatic organisms for respiration — a critical process for almost all organisms. Primary sources of DO include the atmosphere and aquatic plants. |
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Pelagic zone |
is the part of the open sea or ocean that is not near the coast or sea floor. |
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Euphotic Zone |
is the depth of the water in a lake or ocean that is exposed to such intensity of sunlight |
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Abyssal Zone |
contains the very deep benthic communities near the bottom of ocean |
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Shelter-wood Cutting |
a progression of forest cuttings leading to the establishment of a new generation of seedlings of a particular species or group of species without planting. |
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Gleaning |
gather (leftover grain or other produce) after a harvest. |
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phytoremediation |
direct use of living green plants for in situ, or in place, removal, degradation, or containment of contaminants in soils, sludges, sediments, surface water and groundwater. Phytoremediation is: A low cost, solar energy driven cleanup technique. |
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visosities |
a quantity expressing the magnitude of internal friction, as measured by the force per unit area resisting a flow in which parallel layers unit distance apart have unit speed relative to one another. |
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Asbestos |
g mineral that once was lauded for its versatility, recognized for its heat resistance, tensile strength and insulating properties, and used for everything from fire-proof vests to home and commercial construction. It was woven into fabric, and mixed with cement |
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selenium |
the chemical element of atomic number 34, a gray crystalline nonmetal with semiconducting properties. |
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Pesticide tread mill |
necessary for a farmer to continue using pesticides regularly because they have become an indispensable part of an agricultural cycle. |
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synergism |
the interaction or cooperation of two or more organizations, substances, or other agents to produce a combined effect greater than the sum of their separate effects. |
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Threshold effect |
a sudden and radical change in a phenomenon which often occurs after surpassing a quantitative limit |
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electrostatic precipitators |
a filtration device that removes fine particles, like dust and smoke, from a flowing gas using the force of an induced |
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catalytic converters |
a device incorporated in the exhaust system of a motor vehicle, containing a catalyst for converting pollutant gases into less harmful ones. |
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liquid chromatography |
s a technique used to separate a sample into its individual parts |
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exhaust stream aeration |
steam which is allowed to escape from the cylinder after having been employed to produce motion of thepiston. |
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mountain top removal |
form of surface mining that involves the miningof the summit or summit ridge of a mountain. Coal seams are extracted from a mountain byremoving the land, or overburden, above the seams. |
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KiloWatt Conversion: 1 Kilowatt hour=kilocal 1 kilowatt hour=watt hours |
860.421 kilocal 1000 watt hours |