Sentences with phrase «by microbial organisms»
Manmade production of ammonia and nitrate fertilizers has exploded in recent decades and now vastly exceeds the amount of atmospheric nitrogen converted into reactive nitrogen by microbial organisms around the world.
http://www.sciencebuzz.org/ Not exact matches
A microbial fuel cell, for example, could generate electricity by capturing electrons from the bacteria on electrodes instead of the rocks that these organisms evolved to breathe.
Viral infections simultaneously reduce the amount of nutrients and materials available to larger organisms by killing microbial cells, but also stimulate microbial activity through the release of organic matter and nutrients, which provides increased biomass available for larger organisms including fish.»
Risk Assessment Form (3) Required for projects using hazardous chemicals, activities or devices, and some PHBA's including protists, composting, coliform test kits, decomposition of vertebrate organisms and microbial fuel cells and must be completed and signed by the DS or QS prior to student experimentation.
Inspired by a 2009 FCL team retreat and field trip to Mistaken Point, Newfoundland, coauthors David Jacobs, Roger Summons, David Johnston, and Marc Laflamme used models of canopy flow to explain how sticking up into the water column provided rangeomorphs, some of these earliest multicellular organisms preserved at Mistaken Point, a competitive advantage over microbial mats.
«Some different microbial species, derived from samples of [two] meteorites, have been cultured, cloned and classified by 16S rDNA typing and found to be not essentially different from present day organisms [here on Earth]; they also appear sensitive to growth inhibition by specific antibiotics.»
Moisture is one of the key ingredients needed by fungi and other microbial organisms to grow and proliferate.
Three and a half billion years ago our planet was quite different and Earth's earliest biosphere was dominated by microbial communities - complex multicellular organisms were not to evolve for quite some time, only arriving on the scene about 600 million years ago.
The marine biota also redistribute carbon: marine organisms grow organic tissue and calcareous shells in surface waters, which, after their death, sink to deeper waters, where they are returned to the dissolved inorganic carbon reservoir by dissolution and microbial decomposition.
Some of this exchange is mediated by microbial marine organisms through photosynthesis, in which carbon dioxide is converted into organic matter, and respiration, in which the latter is metabolized.