Iodine is the most primitive and abundant electron-rich essential element in the diet of marine and terrestrial organisms, and as iodide acts as an electron donor and has this ancestral antioxidant function in all iodide-concentrating cells from primitive marine algae to more recent terrestrial vertebrates.
32.
Although they are comparatively recent in the history of life ( the first terrestrial organisms appeared in the Silurian period, about 425 million years ago ) and occupy a much smaller portion of Earth's surface than marine ecosystems, terrestrial ecosystems have been a major site of adaptive radiation of both plants and animals.
33.
However, given Ir's low cosmic abundance, several orders of magnitude below V, Fe, and Cu ( which are actually used by terrestrial organisms ) and Mn and Co ( which would also work, but AFAIK are unattested in terrestrial organisms ), it seems rather unlikely that this compound is used in any alien species'blood . talk ) 03 : 18, 11 December 2014 ( UTC)
34.
However, given Ir's low cosmic abundance, several orders of magnitude below V, Fe, and Cu ( which are actually used by terrestrial organisms ) and Mn and Co ( which would also work, but AFAIK are unattested in terrestrial organisms ), it seems rather unlikely that this compound is used in any alien species'blood . talk ) 03 : 18, 11 December 2014 ( UTC)
How to say terrestrial organism in Hindi and what is the meaning of terrestrial organism in Hindi? terrestrial organism Hindi meaning, translation, pronunciation, synonyms and example sentences are provided by Hindlish.com.
