Sentences with phrase «ancient living organic»

Not exact matches

The backdrop of legend, which in the ancient world made life's history on the earth seem a matter of centuries, has for us been lifted, revealing a vista of uncounted millenniums of organic life, suffering unfathomable agony long before man was here to sin at all.
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Turning over rocks across the crater, the rover has compiled evidence of ancient water — a lake fed by rivers once occupied the crater itself — and organic compounds and other chemicals essential for life.
The biggest caveat, says geologist Dawn Sumner of the University of California, Davis, is that the organic material observed in the study may not actually be ancient, coming instead from recent microorganisms living in the rocks.
Cosmic rays are known to degrade the organic molecules that may be telltale fossils of ancient life.
Although Allwood recovered only a few ancient organic scrapings, not enough to prove life's presence conclusively, she says the diversity of shapes suggests that several types of living organisms were at work.
The geological search for ancient life frequently zeroes in on fossilized organic structures or biominerals that can serve as «biosignatures,» that survive in the rock record over extremely long time scales.
The bacteria living in these sediments were respiring the oxygen but at a slower rate than the supply of organic material dropping out of the water column, allowing these ancient deep marine sediments to remain oxygenated.
Jonathan Jones of The Guardian newspaper noted that his «Dry - stone walling, sacks of grain and rice, and a painting that includes part of the score of St John Passion by JS Bach, bring a sense of real life, organic and ancient, into the museum.»
His approach is based on the rigorous application of state - of - the - art isotopic and organic mass spectrometry to study molecular fossils (biomarkers) derived from organisms across the three Domains of life, accumulated in modern and ancient natural archives from both the marine and terrestrial realm.
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