- 行业: Government
- Number of terms: 30456
- Number of blossaries: 0
- Company Profile:
NOAA Coral Reef Conservation Program, National Oceanic and Atmospheric Administration, U.S. Department of Commerce
The removal of marine organisms from the environment at a level that is not sustainable. A reduction of this level would, in the medium term, lead to an increase in the total catch.
Industry:Natural environment
Two nitrogenous bases which form a "rung of the DNA ladder." A DNA nucleotide is made of a molecule of sugar, a molecule of phosphoric acid, and a base molecule. The bases are the "letters" that spell out the genetic code. In DNA, the code letters are A, T, G, and C, which stand for the chemicals adenine, thymine, guanine, and cytosine, respectively. In base pairing, adenine always pairs with thymine, and guanine always pairs with cytosine. In RNA, thymine is replaced by uracil.
Industry:Natural environment
A group of species that resemble each other but are evolved from different ancestors. A polyphyletic group is composed of members that originated, independently, from more than one evolutionary line.
Industry:Natural environment
A mutation resulting from the loss of a small segment of DNA.
Industry:Natural environment
A sensory seta covered by cuticle projecting from most antennules and antennae in crustaceans.
Industry:Natural environment
An animal, such as a parasitic tapeworm, that absorbs digested food products through the body wall.
Industry:Natural environment
Animals that live in the spaces within sediment particles (interstitial spaces).
Industry:Natural environment
