- 行业: Biology
- Number of terms: 15386
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Terrapsychology is a word coined by Craig Chalquist to describe deep, systematic, trans-empirical approaches to encountering the presence, soul, or "voice" of places and things: what the ancients knew as their resident genius loci or indwelling spirit. This perspective emerged from sustained ...
Grasses cultivated for their edible seeds (grains). They include wheat, rice, maize, barley, oats, and rye. Around the world, they are grown more often and more abundantly than any other crop.
Industry:Biology
A coelenterate (corals, sea anemones, jellyfishes, and hydroids) with a hollow cylindrical body anchored at one end and open at the other, where a mouth is fed by tentacles.
Industry:Biology
A common (more than 7,000 species) algae, especially in estuaries, with nucleated cells and chloroplasts that make food from sunlight. The "higher" plants evolved from it.
Industry:Biology
In a cell, the organelle that contains genetic material (DNA and chromosomes); the cell's control center. Also: the center of an atom around which the electrons orbit.
Industry:Biology
A vertical atmospheric layer where temperature remains uniform. Such layers form the bottom of the stratosphere, mesosphere, and thermosphere. See Atmosphere, Layers.
Industry:Biology
Explosion of a phytoplankton population, sometimes because of incoming pollutants that artificially enrich the waters with nutrients. See Eutrophication and Red Tide.
Industry:Biology
A three-atom oxygen molecule that in its gaseous state screens ultraviolet radiation. The protective ozone layer hangs 10 to 50 kilometers above the Earth's surface.
Industry:Biology
Fats, waxes, oils: greasy organic hydrocarbons insoluble in water. With proteins and carbohydrates, membrane-strengthening lipids provide cells with their structure.
Industry:Biology
A cross between two genetically diverse parent plants. Agribusiness companies produce and sell hybrids that do not reproduce in order to retain a monopoly on seeds.
Industry:Biology
How easily soils and rocks transport water horizontally and vertically. Shale is porous and therefore permeable, as is sand and gravel; granite and clay are not.
Industry:Biology
