Coral reefs

Coral reefs

Coral reefs are structures formed from the calcium carbonate secretions of corals. They are colonies of tiny animals in marine areas containing few nutrients.

Industry: Natural environment

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Coral reefs

Sex inversion

Natural environment; Coral reefs

Change of sex naturally or after steroid hormone application; also called "sex reversal".

Fluorescence in situ hybridization (FISH)

Natural environment; Coral reefs

Hybridization of cloned DNA to intact chromosomes, where the cloned DNA has been labelled with a fluorescent dye. This is the major method of physical mapping of cloned DNA fragments on chromosomes.

Marae

Natural environment; Coral reefs

In the Marquesas, a Polynesian sacred enclosure or a place of worship . In Hawaii, it is called a "heiau".

Harmonics

Natural environment; Coral reefs

Pertaining to sound, harmonics are multiples of the fundamental frequency (a single sine wave).

Upwelling

Natural environment; Coral reefs

The process by which warm, less-dense surface water is drawn away from a shore by offshore currents and replaced by cold, denser water brought up from the subsurface.

Bioremediation

Natural environment; Coral reefs

The use of organisms such as plants or microorganisms to aid in removing hazardous substances from an area.

On May 26, 2000, President Clinton signed Executive Order 13158 on Marine Protected Areas (mpas) to strengthen the protection of U.S. ocean and coastal resources. This significant milestone in ocean ...