- Industry: 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
A sac, covered with nematocysts, that protrudes from below the sweeper tentacles or on the column of certain anthozoans.
Industry:Natural environment
A system in which no matter or energy can leave or enter from the outside.
Industry:Natural environment
An amoeboid cell capable of moving through tissues, engulfing and destroying dead cells or bacteria. Certain white blood cells are the most aggressive macrophages.
Industry:Natural environment
An organism, species or community whose characteristics show the presence of specific environmental conditions. Other terms used are indicator organism, indicator plant and indicator species.
Industry:Natural environment
In ethology or animal behavior, a complex behavioural response which once released by a key stimulus, runs to completion.
Industry:Natural environment
Light produced by organisms as a result of conversion of chemical energy to light energy.
Industry:Natural environment
Plants growing in water but emerging from it, usually at the water's edge.
Industry:Natural environment
The addition of nitrogen, phosphorus and carbon compounds or other nutrients into a lake or other waterway that greatly increases the growth potential for algae and other aquatic plants. Most frequently, enrichment results from the inflow of sewage effluent or from agricultural runoff.
Industry:Natural environment
The hypothetical surface of the Earth that coincides everywhere with the mean sea level.
Industry:Natural environment
The rearrangement of sediments by organisms that burrow through them and ingest them.
Industry:Natural environment
