- المجال: Government
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NOAA Coral Reef Conservation Program, National Oceanic and Atmospheric Administration, U.S. Department of Commerce
The pharynx in anthozoans; foregut of higher animals; the anterior or oral portion of the alimentary canal of an embryo.
Industry:Natural environment
The tendency of a sample to exclude some members of the sampling universe and over-represent others.
Industry:Natural environment
The growth of a population is limited by the resource in shortest supply. Also known as 'Liebig's Law'.
Industry:Natural environment
A fingerlike projection from a gill arch through which respiratory gases enter and leave the blood.
Industry:Natural environment
A male or female that is the result of sex change. A secondary male would be derived from a protogynous female, while a secondary female would be derived from a protandrous male.
Industry:Natural environment
A square or rectangular sampling unit of known area (e.g.,1 m2) within which organisms are counted or measured. Quadrats can be used to estimate the percent cover of each species or other reef components and obtain information about density, abundance, colony size, and biodiversity.
Industry:Natural environment
A virus that attacks and infects bacterial cells. Phages consist of a protein coat enclosing the genetic material, DNA or RNA, that is injected into the bacterium. Upon infection, synthesis of host DNA, RNA and proteins ceases and the phage genome is used to direct the synthesis of phage nucleic acids and proteins using the host's transcriptional and translational apparatus.
Industry:Natural environment
