- Industry: Government
- Number of terms: 30456
- Number of blossaries: 0
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NOAA Coral Reef Conservation Program, National Oceanic and Atmospheric Administration, U.S. Department of Commerce
An isotope of a chemical element which is not spontaneously radioactive. Elements can exist in both stable and unstable (radioactive) forms. Most elements of biological interest (including C, H, O, N, and S) have two or more stable isotopes, with the lightest of these present in much greater abundance than the others. Among stable isotopes the most useful as biological tracers are the heavy isotopes of carbon and nitrogen. These two elements are found in the earth, the atmosphere, and all organisms.
Industry:Natural environment
Cells or organisms having more than twice the haploid number of chromosomes.
Industry:Natural environment
Hookah refers to diving where the diver is supplied with breathable air from the surface via an air compressor and an airline (hose). This type of diving is ideal for shallow water commercial applications.
Industry:Natural environment
In taxonomy, when two names for the same taxon are first published in the same publication, the one which appears on the earlier page has precedence.
Industry:Natural environment
Statistical methods for analysing physical and biological community data using multiple variables.
Industry:Natural environment
The evolution of a new species because of the isolation of a small group of individuals from the other members of a population.
Industry:Natural environment
The proboscis of a jellyfish: a tubular structure that connects the mouth to the digestive cavity.
Industry:Natural environment
The upper or open end of the corallite or coral polyp cup; the central body of entoprocts (goblet worms) or crinoids (sea lilies and feather stars).
Industry:Natural environment
The State of Hawai‘i created the Natural Area Reserves System, or NARS, to preserve and protect representative samples of Hawaiian biological ecosystems and geological formations. The diverse areas found in the NARS range from marine and coastal environments to lava flows, tropical rainforests, and even an alpine desert. One can find rare plants and animals within these areas, many of which are on the edge of extinction. The reserves also protect some of the major watershed areas which provide vital sources of fresh water.
Industry:Natural environment
A chromatophore which contains black and brown pigments called melanin.
Industry:Natural environment
