Evolution, of life on earth

Archaea or Archaebacteria, which live in sulphurous waters around undersea volcanic vents. An extraordinarily stable enzyme which functions even at 135 °C and survives at pH 3.2-12.7 has been identified [142]. This enzyme has been termed STABLE (stalk-associated archaebacterial endoprotease). It is suggested that such exceptional stability may be attributable to unusually large Mr and tight folding of the protein chain. Suggested uses include washing powders and detergents, as well as industrial catalysts. It is even proposed that such remarkable properties may have contributed to the early evolution of life on earth [142]. 

The history of carbon in our universe has been of great importance in the evolution of life on Earth and quite possibly in other galaxies as well. Elemental carbon was formed sometime... 

C. De Duve, Vital Dust. The Origin and Evolution of Life on Earth, Perseus Books Group, 1995. 

This model of the evolution of life on Earth does not preclude the possibility that life arrived on Earth fully formed from another body [the Panspermia Hypothesis (Horneck and Baumstark-Khan 2002 Wharton 2002 Napier 2004 Wallis and Wickramasinghe 2004)]. In this case, only a short-term temporary abode would be necessary for life to become established. 

This fascinating book will be of interest to all biologists and anyone with an interest in the origins and the evolution of life on Earth. 

Modern ideas on the evolution of life on Earth are intimately related to ideas on the evolution of the ocean and atmosphere. In many works it is... 

Marshall, L.C. and George, N.F., 1969. The evolution of oxygen and nitrogen in the Earth s atmosphere with notes on the evolution of life on Earth and the Martian atmosphere. School. Sci. Math., 69 13-30. 

Hancock s (1977, p. 12) discussion of chronometry drew attention to Oppel s careful, precise rock-layer measurements and fossil collecting in establishing a method by which the record of irreversible evolution of life on earth could be documented. Hancock (1977, p. 12) pointed out that Oppel s complete work was published in the same year that Alfred Russell Wallace and Charles Robert Darwin read their joint paper to the Linnean Society of London, On the Tendency of Species to Form Varieties, and on the Perpetuation of Varieties and Species by Natural Means of Selection. Hancock (1977, p. 12) commented that Oppel himself remarked that the more accurately the fossils are examined and species defined, the greater the number of zonal divisions that could be recognized. ... 

Second, volatiles have played an essential role in controlling the evolution of life on Earth. The principal insight of the Gaia hypothesis discussed in Chapter 1 is that there is a relationship between the biosphere and the other... 

The implications of the late heavy bombardment event for the evolution of life on Earth are substantial. It has not gone unnoticed that there is a very short time interval between the end of the late heavy bombardment and the formation of sediments at Isua. Indeed the evidence for impacting at Isua recorded by Schoenberg et al. (2002) could signify that the two events overlapped. This means that either life did not start until after ca. 3.9 Ga, or if it had developed earlier, it had to survive a "high temperature stage" during which the oceans boiled. 

The evolution of life on Earth has depended on a sustained supply of nutrients provided by the... 

The story of the evolution of life on Earth is relatively straightforward in comparison to the problem of how it first arose. The abiotic synthesis on Earth of the organic compounds necessary for the creation of life appears to require a reducing atmosphere (see Box 1.5). Early experiments with electrical discharges in mixtures of methane, ammonia and hydrogen sulphide in the presence of water created various organic compounds es-... 

M0S2 is insoluble in water and, therefore, it would appear that Mo was relatively unavailable for involvement in the early stages of evolution of life on Earth. However, in an oxidising atmosphere i.e. post photosynthesis) M0S2 is converted to [MoO "" (3). 

The evolution of life on Earth is a lawful process which leads to the appearance of human reason and scientific thought. Hence, scientific thought is a regular natural terrestrial phenomenon. Now, it seems logical to say that scientific thought is a planetary phenomenon which cannot destroy the planet which begot it. 

Ribozymes could have played a key role in the early stages of evolution of life on earth, bridging the gap between a primitive metabolism and a crude translational apparatus where the RNA acted as both an informational molecule and a catalyst. 

Natural alkaloids are all alkaloids existing in nature, presently known or still unknown by the science. They are molecules naturally synthesized and novelized in time by living organisms as a result of the evolution of life on Earth. 

Oro J, Miller SL, Lazcano A The origin and early evolution of life on Earth. Annu Rev Earth Planet Sci 1990, 18 317-356. 

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