However, the element abundance in intergalactic space can still closely resemble primordial conditions, unless it has been enriched by some means.

However, the atmosphere was found to be in a stable condition close to its chemical equilibrium, with very little oxygen, methane, or hydrogen, but with an overwhelming abundance of carbon dioxide.

However, some stable isotopes also show abundance variations in the earth as a result of decay from long-lived radioactive nuclides.

However, with the abundance of laser sources available today it is easy to perform a Arago spot experiment ( see for example here ).

However, the abundance of a species within a given box may vary as a function of time due to the input to ( or loss from ) the box or due to the production, consumption or decay of this species within the box.

This is because < sup > 238 </ sup > U is much more stable than < sup > 235 </ sup > U or < sup > 234 </ sup > U, as the half-life of each isotope reveals: 4. 468 × 10 < sup > 9 </ sup > years for < sup > 238 </ sup > U compared to 7. 038 × 10 < sup > 8 </ sup > years for < sup > 235 </ sup > U and 245, 500 years for < sup > 234 </ sup > U. However, the natural abundance of a given isotope is also affected by the probability of its creation in nucleosynthesis ( as in the case of samarium ; radioactive < sup > 147 </ sup > Sm and < sup > 148 </ sup > Sm are much more abundant than stable < sup > 144 </ sup > Sm ) and by production of a given isotope by natural radioactive isotopes ( as in the case of radiogenic isotopes of lead ).

However, the relative abundance of calcite-and aragonite-using lineages does not reflect subsequent seawater chemistry – the magnesium / calcium ratio of the oceans appears to have a negligible impact on organisms ' success, which is instead controlled mainly by how well they recover from mass extinctions.

However, other factors may also control their distribution and abundance, including nutrients, disturbance from waves, grazing, and salinity.

However, the abundance of a species within a given box may vary as a function of time due to the input to ( or loss from ) the box or due to the production, consumption or decay of this species within the box.

However, the low abundance of heavy elements in the chromosphere of Epsilon Eridani is indicative of an older star, because the medium out of which stars form is steadily enriched by heavier elements produced by older generations of stars.

However, the low pH and abundance of lactobacilli may upset the intestines of people who are not used to eating acidic foods.

However the abundance of Life on Earth makes the habitable zones of exoplanetary systems of particular interest to exobiologists and the Search for extraterrestrial intelligence.

However, this hypothesis, which was initially proposed by Joseph Larmor in 1919, has been modified due to extensive studies of magnetic secular variation, paleomagnetism ( including polarity reversals ), seismology, and the solar system's abundance of elements.

However, its use for such purposes today is very rare, despite the mushroom's abundance.

However, in marshes of western New York, there was a significant ( p = 0. 041 ) negative relationship between percent flooded timber on a site and sora relative abundance.

However, in stands compared in 1996, the 95 % confidence intervals of eastern towhee relative abundance on the 2 sites had a substantial degree of overlap.

However, some parthenogenic species retain the ability to mate and are bisexual depending on the presence and abundance of males.

However, the abundance of r-process nuclei requires that either only a small fraction of supernovae eject r-process nuclei to the interstellar medium, or that each supernova ejects only a very small amount of r-process material.

However, the mole-fraction abundance of oxygen in water is only 33 % because only 1 atom of 3 in water is an oxygen atom.

However, succeeding centuries provide an abundance of historical material.

However, Chadderton developed an abundance of civic institutions including public street lighting, Carnegie library, public swimming baths, and council with its own town hall.

Temperature and salinity have little affect on the survival of crown-of-thorns larvae However, abundance and species of the particular component of phytoplankton ( unicellular flagellates ) on which the larvae feed has a profound effect on survival and rate of growth.

However, any particular abundance structure will have an associated probability.

However, the species abundance along an envronmental gradient is not only determined by the abiotic factor but, also by the change in the biotic interactions along the environmental gradient.

However, at eighty-five, he had still been busy writing articles, reviewing and speaking, and I had never before known an Englishman who had visited and lectured in three quarters of the United States.

However, by comparing the TV snatches, two different radio station re-runs, and the censored Los Angeles Times version, I found that the radio stations had edited out questions ( ABC removed the one regarding Laos ) or even a paragraph out of the middle of the President's answer.

However, such a hotbed of gossip had grown up during the trial, that every precaution had to be taken to keep my visit from being whispered to the world, Society, and even, alas, to my own mother.

However, the Federal Court held that since the State had accepted the provisions of the Wagner-Peyser Act into its own Code, and presumably therefore also the regulations, it was now a State matter.

However much football has been over-emphasized, the public likes to measure its collegiate favorites by the scoreboard, so, while Yale need never give its record a thought again since outscoring its opponents 694 to 0 in the season of 1888, Dartmouth had to wait until its championship team of 1925 for national recognition.

However, it was virtually impossible to screen the mob outside, even if Bonner had manpower available for the purpose.

However, he had a strong interest in the fledgling motion picture industry and when Essanay Studios offered him the opportunity to become a scriptwriter, he took the job.

However, this story may reflect a cultural influence which had the reverse direction: Hittite cuneiform texts mention a Minor Asian god called Appaliunas or Apalunas in connection with the city of Wilusa attested in Hittite inscriptions, which is now generally regarded as being identical with the Greek Ilion by most scholars.

However, during the tour of Australia in 2006 / 7, the MCC official accompanying the urn said the veil legend had been discounted, and it was now " 95 % certain " that the urn contains the ashes of a cricket bail.

However, his term was marked by economic depression that had grown out of the Panic of 1873, which Mackenzie's government was unable to alleviate.

However, much of southeastern Europe and central Europe, including many of the Goths and Vandals respectively, had embraced Arianism ( the Visigoths converted to Arian Christianity in 376 ), which led to Arianism being a religious factor in various wars in the Roman Empire.

However, to make a working computer, users still had to add a case, power supply transformers, power switch, ASCII keyboard, and composite video display.

However, according to Josephus, in Antiquities, Book 7, Chapter 1, Joab had forgiven Abner for the death of his brother, Asahel, the reason being that Abner had slain Asahel honorably in combat after he had first warned Asahel and had no other choice but to kill him out of self defense.

However, the temple of Ares to which he refers had only been moved from Acharnes and re-sited in the Agora in Augustus's time, and statues known to derive from Alcamenes ' statue show the god in a breastplate, so the identification of Alcamenes ' Ares with the Ares Borghese is not secure.

However, Ealdred did not receive the other two dioceses that Lyfing had held, Crediton and Cornwall ; King Edward the Confessor ( reigned 1043 – 1066 ) granted these to Leofric, who combined the two sees at Crediton in 1050.

However, Leofgar lost the battle and his life, and Edward had to sue for peace.

However, Peter had wished his son and heir to dedicate himself to the service of new Russia, and demanded from him unceasing labour in order to maintain Russia's new wealth and power.

However, his succession could not have been foreseen at the time, as Alfred had three living elder brothers.

However, near the French border, General Mola had him arrested and expelled from the country.