- المجال: Government
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NOAA Coral Reef Conservation Program, National Oceanic and Atmospheric Administration, U.S. Department of Commerce
A multidisciplinary science that deals with the conservation of genes, species, populations, communities, and ecosystems that make up the Earth's biodiversity. Its goals are to investigate human impacts of biodiversity and to develop approaches to prevent extinction of species through stewardship of entire biological communities.
Industry:Natural environment
A sedimentary rock made of spherical or egg-shaped grains of calcium carbonate (ooids). If the ooids are greater than two mm in diameter, the rock may be called a "pisolite"; also called "egg stone" .
Industry:Natural environment
An unusual form of cell division in which the nucleus cleaves without change in its component structure (such as the formation of chromosomes), followed by the division of the cytoplasm. Amitosis may occur chiefly in highly specialized cells which are incapable of long-continued multiplication, in transitory structures, and in early stages of degeneration.
Industry:Natural environment
In fishes, a spine projecting from the operculum (gill cover).
Industry:Natural environment
The angular distance between an imaginary line around the Earth, or any spherical body, parallel to its equator and the equator itself; an imaginary line around the Earth parallel to the equator .
Industry:Natural environment
