However, in contexts where " amoeboid " is defined more loosely, there are many amoeboid species that are in the Excavata clade.

However, there are reports of particular amphibian populations invading marine waters where their species is normally unable to survive.

However, some species with hairy seeds ( e. g. Eriospermum, family Asparagaceae s. l.

However, this name is used to refer to the brown vine snake, Ahaetulla pulverulenta, a slender, arboreal species that grows to five feet ( 152 cm ) at most and feeds only on small vertebrates.

However, the species of sea snail which is known in the seafood trade as the " Chilean abalone ", Concholepas concholepas, is from another family altogether.

However, the effects of acid rain can last for generations, as the effects of pH level change can stimulate the continued leaching of undesirable chemicals into otherwise pristine water sources, killing off vulnerable insect and fish species and blocking efforts to restore native life.

However, reactive oxygen species also have useful cellular functions, such as redox signaling.

However, bryozoan colonies are founded by an ancestrula, which is round rather than shaped like a normal zooid of that species.

However, the tree constructed by the living tree project, a collaboration between ARB-Silva and LPSN where a 16S ( and 23S if available ) tree of all validated species was constructed, the genus Bacillus contains a very large number of nested taxa and majorly in both 16S and 23S it is paraphyletic to Lactobacillales ( Lactobacillus, Streptococcus, Staphylococcus, Listeria, etc.

However, they are susceptible to Oodinium or velvet disease, microsporidia ( Pseudoloma neurophilia ), and Mycobacterium species.

However, this is only a general rule and many species differ.

However, many species are endangered.

However, there is debate ongoing between groups that believe the evidence indicates substantial extinction of these species at the K – T boundary, and those who believe the evidence supports multiple extinctions and expansions through the boundary.

However, molecules that are larger than the average pore size of the packing are excluded and thus suffer essentially no retention ; such species are the first to be eluted.

However, most authorities consider Sagittarius to be the civilized Chiron, while Centaurus represents a more uncouth member of the species.

However, one group of researchers have found that carob seeds in fact have typical variability compared to the seeds of other species.

However, many such models have been proven to be wrong and loss of habitat does not necessarily lead to large scale loss of species.

It is merely required they have capable and compatible receiver systems operational ; However, this is a variable humans cannot accurately estimate without actually making first contact with an intelligent extraterrestrial species.

However, they viewed life in terms of essentialism, where species were conceptualized as static unchanging things while varieties were seen as aberrations of an idealized type.

However, if these species do indeed constitute their own genus, then they may be given their own name, the Paranthropus.

However, there is an ongoing debate over whether H. floresiensis is indeed a separate species.

However, there may be confusion in trying to identify the species if one does not realise that it is a juvenile one is working with.

However, under some conditions, e. g. less fertile soils or less predictable drought regimes, the proportion of evergreen species increases and the forests are characterised as " sclerophyllous ".

However, felids may be found in almost any environment, with some species being native to mountainous terrain or deserts.

However, Przewalski's " Rosefinch " ( Urocynchramus pylzowi ) is now classified as a distinct family, monotypic as to genus and species, and with no particularly close relatives among the Passeroidea.

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 abundance that had existed in Penobscot territory quickly disappeared as demand for the resources in the Penobscot homelands rose.

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.