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NOAA Coral Reef Conservation Program, National Oceanic and Atmospheric Administration, U.S. Department of Commerce
The minute aperture in the egg membrane for the entry of the sperm cell.
Industry:Natural environment
When fertilization of an egg does not occur immediately following introduction of spermatozoa into the female reproductive tract, but may be delayed for weeks or months.
Industry:Natural environment
A body of rock built up by or composed mainly of sedentary organisms, e.g., hard corals, calcareous algae or mollusks, and enclosed or surrounded by rock of different origin.
Industry:Natural environment
A distribution in which a variable is distributed like the sum of the the squares of any given independent random variable, each of which has a normal distribution with a mean of zero and a variance of one.
Industry:Natural environment
A line drawn on a map or chart joining points that receive the same amount of precipitation.
Industry:Natural environment
A pinacocyte that adheres a sponge to a substrate by the external secretion of a collagenous matrix.
Industry:Natural environment
A software program that is used to contact and obtain data from a server software program on another computer, often across a great distance. Each client program is designed to work with one or more specific kinds of server programs, and each server requires a specific kind of Client. A web browser is a specific kind of client.
Industry:Natural environment
An evolutionary line of coelomates that include mollusks, annelids, and arthropods. They develop their embryo by spiral cleavage, and the blastopore of the gastrula develops into the mouth. The group exhibits bilateral symmetry.
Industry:Natural environment
