- المجال: Government
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NOAA Coral Reef Conservation Program, National Oceanic and Atmospheric Administration, U.S. Department of Commerce
An expression for the ratio of the 18O to 16O atoms in a sample relative to a standard, defined as: δ18o = (18O/16O sample - 18O/18O standard)/ 18O/16O standard.
Industry:Natural environment
Any substance assimilated by organisms that promotes growth. Marine scientists typically measure nitrites, nitrates, phosphates, and silicates as nutrients for plant growth.
Industry:Natural environment
In taxonomy, a diagnostic character used in a taxonomic key.
Industry:Natural environment
One of four branched ciliated canals that originates directly from the stomach of scyphozoan medusae and moves partially digested food materials from the ring canal to the stomach.
Industry:Natural environment
The creation of products and processes for the purpose of improving human chances for survival, comfort level, and quality of life.
Industry:Natural environment
A basket star is a specialized type of brittle star (Echinodermata). It has a series of complexly branched arms which are used to capture plankton.
Industry:Natural environment
