- 行业: Government
- Number of terms: 30456
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NOAA Coral Reef Conservation Program, National Oceanic and Atmospheric Administration, U.S. Department of Commerce
In genetics, the breaking during meiosis of one maternal and one paternal chromosome, the exchange of corresponding sections of DNA, and the rejoining of the chromosomes. This process can result in an exchange of alleles between chromosomes.
Industry:Natural environment
Refers to a climatic process that re-occurs every three to ten years. El Niño is an example of a climatic process that re-occurs every 4-6 years.
Industry:Natural environment
The blue coral, Heliopora coerulea, is an octocoral that has a massive aragonite skeleton and is an important reef builder in some areas.
Industry:Natural environment
The level of the surface of the sea between mean high and mean low tide. It is used as a reference point for measuring elevations.
Industry:Natural environment
The science dealing with the properties, distribution and circulation of water and snow.
Industry:Natural environment
A coral in the anthozoan order Scleractinia. Also known as the stony corals, these organisms possess a hard external calcareous skeleton. A synonym of stony coral.
Industry:Natural environment
A hazardous condition for scuba divers that is characterized by air bubbles released from ruptured lung air pockets (alveoli) into the pulmonary circulation. The bubbles then travel to the arterial circulation, where they may block blood flow in the small arteries or capillaries of the brain or heart. The results may be fatal. Arterial gas embolism in divers may be caused by holding one's breath during an ascent, wherein the lungs expand to the danger point.
Industry:Natural environment
A neurological receptor that responds to light, electricity, and magnetism. Photoreceptors respond to light and electroreceptors detect electrical energy.
Industry:Natural environment
A term associated with reproductive or breeding behavior, e.g., nuptial coloration, nuptial tubercles (in fishes).
Industry:Natural environment
