However, no comprehensive environmental protection program has emerged, and decisions on environmental policy have been made on an ad hoc basis.

However, the marine and freshwater environments of fishes mitigated environmental effects of the extinction event.

However, the differences between the various groups that make up the modern environmental movement tend to outweigh such similarities, and they rarely co-operate directly except on a few major global questions.

However, the term could also be applied to environmental scientists.

However, by the mid-19th century, environmental determinism was under attack for lacking methodological rigour associated with modern science, and later as serving to justify racism and imperialism.

However, recent research published in Environmental Science & Technology, a publication of the American Chemical Society, suggests that many cases of feline hyperthyroidism are associated with exposure to environmental contaminants called polybrominated diphenyl ethers ( PBDEs ), which are present in flame retardants in many household products, in particular, furniture and some electronic products.

However reservoirs have significant environmental impact, as does alteration of naturally occurring stream flow.

However, environmental and safety issues exist with the choice of vegans.

However, the conclusion was ambiguous as the overall content was above that expected of a male, and variations across the body may have been due to environmental factors.

However, natural selection is " blind " in the sense that changes in phenotype ( physical and behavioral characteristics ) can give a reproductive advantage regardless of whether or not the trait is heritable ( non heritable traits can be the result of environmental factors or the life experience of the organism ).

However, the need to respond to environmental concerns over the country's globally recognized ecological heritage, may increasingly need to be factored into capitalization of mining operations.

However, pre-war claims of wide scale, long-lasting, and significant global environmental impacts were not borne out and found to be significantly exaggerated by the media and speculators, with climate models at the time of the fires predicting only more localized effects such as a daytime temperature drop of ~ 10 ° C within ~ 200 km of the source.

However, an underexplored approach is that of Helmuth Plessner, whose idea of a material a priori based in our biology and environmental interactions is only now being recognized as relevant to a hermeneutics of nature, for example, in the works of Petran Kokelkoren.

However, due to exposure to environmental disease ( parvovirus ), parasites and competition, ( with coyotes as well as intraspecific aggression ), the red wolf was unable to successfully establish a wild population in the park.

However, twin and adoption studies suggest that genetic factors interact with environmental factors for stuttering to occur, and many stutterers have no family history of the disorder.

However, the point at which a solution can become saturated can change significantly with different environmental factors, such as temperature, pressure, and contamination.

However, this view depends on whether one determines that it is the development ( the plant ) which needs to be sustainable, or whether it is the human-nature ecology ( the environmental conditions ) in which the plant exists which should be sustainable.

However, as environmental technologies were to make up a potential market, some countries made large investments in renewable energies, energy conservation and sustainable transport.

However, when other environmental influences like poverty, low education of the parent, and violence in the home are controlled ; children of cohabiting couples are developmentally similar to their peers from a two parent family.

However, the walls are naturally porous and only act as stiff shells that protect bacteria from severe environmental impacts.

However, Argentina has prohibited such helicopter tours because of the environmental impact on the flora and fauna of the falls.

However, individual scientists may disagree as to the role that genetic and environmental factors play.

However, the incidental environmental damage is severe, since many plant species are wiped out in the process.

However, it is believed to be due to a combination of biological, psychological and / or environmental abnormalities.

However, if the child has been constantly surrounded, during nursery and early school age, by peer groups ; ;

However, this division into two groups is considered by some modern scholars to be too simplistic and often it is practically impossible to know whether a lyric composition was sung or recited, or whether or not it was accompanied by musical instruments and dance.

However, their overall world view is rejected by groups such as Peoples Global Action and anti-fascist groups such as ANTIFA.

However, the problem is being addressed by community organizations and city government: Trees Atlanta, a non-profit organization founded in 1985, has planted and distributed over 75, 000 shade trees in the city, while Atlanta ’ s government has awarded $ 130, 000 in grants to neighborhood groups to plant trees.

However, the exact placement of the linkage can vary and the orientation of the linking functional groups is also important, resulting in α-and β-glycosidic bonds with numbering definitive of the linking carbons ' location in the ring.

However, attention is still given to these groups by botanists, and fungi ( including lichens ), and photosynthetic protists are usually covered in introductory botany courses.

However, some cultural groups have sought to revive the custom at Uisneach and perhaps at the Hill of Tara.

However, most Republicans did not make a distinction, and " Black and Tans " was often used as a catch-all term for all police and army groups.

However, rivalry between Hadjerai, Zaghawa and Gorane groups within the government grew in the late 1980s.

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, all non-neornithean birds became extinct, including flourishing groups like enantiornithines and hesperornithiforms.

However, Hertwig confirmed his observation in other animal groups, e. g., amphibians and molluscs.

However, studies of mitochondrial DNA show that the divergence between each of the three chipmunk groups is comparable to the genetic dissimilarity between Marmota and Spermophilus.

However, the combined effects of ethnic and religious fractionalization, i. e. the more chance that any two randomly chosen people will be from separate ethnic or religious groups the less chance of a civil war, were also significant and positive, as long as the country avoided ethnic dominance.

However, in several European countries with civil law, as opposed to the Anglo-American common law system, changes have been made in recent years that allow consumer organizations to bring claims on behalf of large groups of consumers.

However, the Mongol invasion left Korea in disarray and anomie, and these groups became nomadic.

However, by 1704 the Province of Pennsylvania had grown so large that their representatives wanted to make decisions without the assent of the Lower Counties and the two groups of representatives began meeting on their own, one at Philadelphia, and the other at New Castle.

Because reported AIDS cases in Africa and other parts of the developing world include a larger proportion of people who do not belong to Duesberg's preferred risk groups of drug addicts and male homosexuals, Duesberg writes on his website that " There are no risk groups in Africa, like drug addicts and homosexuals ," However, many studies have addressed the issue of risk groups in Africa and concluded that the risk of AIDS is not equally distributed.

However, different groups of birds vary greatly in their sensitivity to these chemicals.

However, within the wide range of Christianity, there are dissenting views from opposing groups, some of which are Complementarians and Patriarchalists.

However, such groups tend not to " burn out " and to sustain for long periods, even generations, protecting the same local treasures.