- 行业: Government
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NOAA Coral Reef Conservation Program, National Oceanic and Atmospheric Administration, U.S. Department of Commerce
A process or place that acts to absorb or remove energy or a substance from a system. The ocean, for example, is a sink for carbon dioxide.
Industry:Natural environment
A statistical measure of central tendency. The sum of a set of observations divided by the number of observations. It is also referred to as 'arithmetic mean' and 'sample mean'.
Industry:Natural environment
An instrument for recording very small electrical currents.
Industry:Natural environment
In taxonomy, the identical spelling of a generic-group name and one of its included specific-group names, such as the fish, Badis badis, or the western lowland gorilla, Gorilla gorilla gorilla.
Industry:Natural environment
Pain or discomfort in an enclosed space (sinuses, middle ears, inside a face mask) experienced by scuba divers on descent and ascent, caused by barotrauma to the affected area.
Industry:Natural environment
A multicellular animal (metazoa) below the tissue grade of construction. Sponges belong to the phylum Porifera. There are approximately 5,000 living species classified in three distinct groups, the Hexactinellida (glass sponges), the Demospongia, and the Calcarea (calcareous sponges). They are important components of a coral reef ecosystem.
Industry:Natural environment
