| agricultural | adjective, see agriculture:
The science, art, and business of cultivating soil, producing crops, and raising livestock; farming.
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| agriculture | The science, art, and business of cultivating soil, producing crops, and raising livestock; farming.
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anaerobic
Author: webmaster | Growing, living or occurring in the absence of molecular oxygen. |
anaerobic digestion
Author: webmaster | AD refers to the breakdown of organic materials due to a combination of hydrolysis and symbiotic anaerobic bacterial processes in an oxygen free environment. Key product is biogas, an 'organically' produced hydrocarbon fuel. see also biofuel, methanogenesis, methanogens & fossil fuel. |
archaea
Author: webmaster | Discovered by Carl Woese in the late seventies they were initially believed to be bacteria, but are a unique group of microorganisms. They are genetically and metabolically different from all other known bacteria. They appear to be living fossils, the survivors of an ancient group of organisms that bridged the gap in evolution between bacteria and the eukaryotes (multicellular organisms). The name Archaea comes from the Greek archaios meaning ancient. see also http://www.ucmp.berkeley.edu/archaea/archaea.html |
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