- Industry: Government
- Number of terms: 30456
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NOAA Coral Reef Conservation Program, National Oceanic and Atmospheric Administration, U.S. Department of Commerce
A term given to the anal fin (or the anterior portion of it) of a male fish when it is modified to function as a copulatory organ, e.g., in guppies.
Industry:Natural environment
An area of high pressure. Circulation is clockwise around the high in the Northern Hemisphere and counterclockwise in the Southern Hemisphere.
Industry:Natural environment
Any epithelium having motile cilia on the free surface.
Industry:Natural environment
Describes the construction of an organism or tissue that is a mass of protoplasm which is not divided into cells, e.g., some structural parts of slime moulds and fungi.
Industry:Natural environment
In genetics, the process by which offspring derive a combination of genes different from that of either parent. In higher organisms, this can occur by crossing over.
Industry:Natural environment
Molten rock that forms naturally within the Earth. Magma may be either a liquid or a fluid mixture of liquid, crystals, and dissolved gases.
Industry:Natural environment
Refers to a region of low atmospheric sea level pressure; or, the wind system around such a low pressure centre that has a clockwise rotation in the Northern Hemisphere and a counterclockwise rotation in the Southern Hemisphere.
Industry:Natural environment
The bond between two amino acids formed when a carboxyl (-COOH) group of one amino acid joins an amino (-NH2) group of another amino acid, releasing water in the process.
Industry:Natural environment
The level to which the water rose on an average day over a previous period of time (years or decades); the average of all the high tides as calculated over a long period of time.
Industry:Natural environment
The science of measuring ocean depths to determine the topography of the sea floor.
Industry:Natural environment
