Mendicant 发表于 2025-3-28 16:25:06
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e,the search for extraterrestrial life, and a tour of the bodies in our Solar System for signs of conditions conducive for life. While informed speculation in this emerging field cannot be avoided, the authors 978-3-319-97658-7NOMAD 发表于 2025-3-29 02:14:37
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Definition of Life, twofold. The first is that living systems use compounds that are abundant in the surrounding environment, and processes that are not intrinsically different from reactions that occur abiologically. There does not appear to exist a single characteristic property that is both intrinsic and unique to天气 发表于 2025-3-29 08:01:34
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Energy Sources and Life,state of entropy (Morowitz 1968). Energy is also needed to perform work. Life on Earth can be distinguished by the external energy source that it uses. Photoautotrophic life derives energy from sunlight and uses CO. as a carbon source. Chemolithotrophic life uses redox reactions involving abiologica开始从未 发表于 2025-3-29 23:02:13
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Habitats of Life,rience we know that life does exist on the surface of a planet, in its subsurface and transiently at least in the atmosphere. Where it is present, it exists in a surprising diversity and in a variety of microhabitats, from deep caverns (Hose et al. 2000; Melim et al. 2001) and water droplets (Mecken