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Jürgen Engel,Hans Peter Bächingerkdown are powered by solar ultraviolet radiation, though at different wavelengths. The cycle of generation and destruction keeps the concentration constant, but on an extremely low level: If compressed under atmospheric pressure, the total ozone layer would be on the order of a few millimeters thickIntegrate 发表于 2025-3-23 15:06:00
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Jürgen Engel,Hans Peter Bächinger1991, 1994) has stirred the interest of oceanographers and has spurred studies into the roles of these small particles in marine food webs and biogeochemical fluxes. The abundance of non-living submicron particles (10.–10. particles ml.) far exceeds the number of living particles of similar size dimCRUE 发表于 2025-3-24 00:11:54
https://doi.org/10.1007/978-0-387-73906-9r communities prior to laboratory study. Isolation was necessary to obtain a sufficient amount of homogeneous cell material for chemical analyses, yet it constrained most laboratory work to the molecular, cellular, or organismal level. However, fluorescent probes and other molecular techniques now a一大块 发表于 2025-3-24 06:13:10
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https://doi.org/10.1007/978-0-387-73906-9nd Mooney, 1993), microbial ecology (Margulis, 1990; Caldwell, 1993; Caldwell and Costerton, 1996), germ theory (Caldwell, 1995; Caldwell .., 1997a), and information theory (Rasmussen, 1988, 1991; Rasmussen .., 1990; Yockey, 1990, 1995; Kelly, 1994) make it difficult to formulate testable hypotheses