- المجال: Government
- Number of terms: 30456
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NOAA Coral Reef Conservation Program, National Oceanic and Atmospheric Administration, U.S. Department of Commerce
Tutta la gamma di risorse informative disponibili attraverso reti di computer.
Industry:Natural environment
A subterranean layer of porous water-bearing rock, gravel, or sand capable of storing and conveying water to wells and streams.
Industry:Natural environment
Acque costiere e le terre adiacenti che esercitano un'influenza misurabile sugli usi degli oceani e le loro risorse viventi e non viventi.
Industry:Natural environment
Tetrodotoxin (TTX) is an especially potent marine neurotoxin, named after the order of fish from which it is most commonly associated, the Tetraodontiformes (includes the puffers, porqupine fish, blowfish, cowfish, boxfish).The toxin appears in high concentrations in the gonads, liver, intestines and skin of pufferfish. The fatality rate when injested may be as high as 60 percent. Tetradotoxin is more than 10,000 times deadlier than cyanide. Other marine and terrestrial organisms have been found to store TTX, for example, the Australian blue-ringed octopus, parrotfish, triggerfish, gobies, angelfish, ocean sunfish, globefish, seastars, starfish, xanthid and other crabs, a horseshoe crab, a number of marine snails, flatworms, tunicates, ribbonworms, mollusks and marine algae (Jania spp.) Terrestrial organisms include the Harlequin frogs (Atelopus spp.), three species of California newt and other eastern salamanders.
Industry:Natural environment
Il primo livello in una piramide alimentare; consistono solitamente di organismi fotosintetici che generano il cibo utilizzato da tutti gli altri organismi nell'ecosistema.
Industry:Natural environment
The process whereby chemical energy is used to synthesize organic compounds from inorganic compounds, e.g., the oxidation of ammonia to nitrite by nitrifying bacteria.
Industry:Natural environment
Un metodo di separazione dei componenti chimici di una miscela, che prevede il passaggio di un campione gassoso attraverso una colonna di una fase adsorbente fissa.
Industry:Natural environment
Nella colorazione degli animali, un cerchio di colore intorno un posto di un altro colore; un anello di sabbia che circondano una scogliera di patch.
Industry:Natural environment
