(1) In 1988, William Chameides of the Georgia Institute of Technology used Atlanta as a case study to show that the impact of such biogenic emissions from trees on urban ozone levels could be significant.(2) Some of our results suggest that the extractable agent in nest soil is organic, and possibly biogenic .(3) It serves as a timely reminder that simple molecules, such as biogenic amines and many others, were not ‘invented’ by animals, but that their origin dates back long before the diversification of plant and animal evolutionary lineages.(4) He expanded this idea to the propose the ‘deep, hot biosphere’ which both generates methane and adds biogenic signatures to inorganic petroleum, and that part, at least, is looking more correct every year.(5) Snake venoms are a complex mixture of proteins, polypeptides, biogenic amines, and other components that may have neurotoxic, hemostatic, and/or hemorrhagic effects on prey.(6) In terms of biomass, organic carbon fixation, space occupation, and biogenic habitat, kelps are the dominant reef-inhabiting organisms in cool seas, especially in the Northern Hemisphere.(7) The monthly settling particulate samples provide a data set of seasonal and interannual export fluxes of organic carbon, biogenic opal, calcium carbonate, and lithogenic material.(8) Slow transmission can take many minutes and is enormously more complex, involving at least 100 different chemicals falling into four classes: biogenic amines, peptides, amino acids and nitric oxide.(9) Carbon occurs in marine sediments as organic carbon linked with metabolic processes of plants and animals, and as carbon contained within biogenic and abiogenic carbonate minerals.(10) The European Space Agency will launch Mars Express in that year with a lander, Beagle - 2, with a scientific payload dedicated to detecting signs of biogenic activity on Mars.(11) Given their consistent morphology, these structures are considered biogenic .(12) If intrinsic changes in biogenic amine neurochemistry occur because of winning or losing experiences, these changes may be reflected in the types of chemicals released into the urine of dominant and subordinate crayfish.(13) Pelagic biogenic sediments consist of the fine-grained skeletal debris of marine planktonic and benthonic organisms.(14) The methods of distinguishing biogenic from nonbiogenic carbon developed by van Zuilen and Lepland have helped support this new evidence and it has now gained widespread acceptance, Arrhenius said.(15) This is due to the special biogenic amine in chocolate, which can change internal secretions.(16) ‘This demonstrates that looking for biogenic signatures alone will complicate the process of looking for life,’ he said.