- 行业: 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
The influx of new members into a population by reproduction or immigration.
Industry:Natural environment
The region of a coral reef seaward of the lower palmata zone and just landward of the buttress or mixed zone.
Industry:Natural environment
To start up any computer program by clicking on its icon or selecting it from the Start menu.
Industry:Natural environment
A comprehensive explanation of a given set of data that has been repeatedly confirmed by observation and experimentation and has gained general acceptance within the scientific community.
Industry:Natural environment
A group of DNA-containing viruses which cause diseases in animals. In humans, they produce acute respiratory tract infections with symptoms resembling the common cold. They are used in gene cloning, as vectors for expressing large amounts of recombinant proteins in animal cells. They are also used to make live-virus vaccines against more dangerous pathogens.
Industry:Natural environment
A mound of earth-covered ice found in the Arctic and subarctic that can reach up to 70 meters (230 ft) in height and up to 600 meters (2,000 ft) in diameter.
Industry:Natural environment
A scraping organ for mastication in certain mollusks, such as snails. In many gastropods the radula consists of a variable number of chitinous teeth, of different shape and size, located in the anterior portion of the pharynx. In the cone shell family it has been reduced to a sharp and grooved tooth, fit to harpoon and inject prey with a powerful venom, which is also potentially fatal to humans.
Industry:Natural environment
A system that provides the organism with a defense against infection. In higher organisms it is afforded by the presence of circulating antibodies and white blood cells. Antibodies are manufactured specifically to deal with the antigens associated with different diseases as they are encountered. White blood cells attack and destroy foreign particles in the blood and other tissues.
Industry:Natural environment
An animal or plant which is equipped with both male and female reproductive organs.
Industry:Natural environment
An oxygen-binding protein found in the muscle cells of animals. It functions as an oxygen storage unit, providing oxygen to the muscles. Diving marine mammals, such as seals and whales are able to remain submerged for long periods because they have greater amounts of myoglobin in their muscles than other animals do. There is a close chemical similarity between myoglobin and hemoglobin, the oxygen-binding protein of red blood cells.
Industry:Natural environment
