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, 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, even without the order of the captain, any member of crew or passenger, can take reasonable measures, when he or she has reasonable grounds to believe that such action is necessary to protect the safety of the aircraft, or of people or property therein.

However, air show accidents are rare and where there is proper supervision air shows have impressive safety records.

However, injuries mounted during the season with the team losing several starters for the year, such as Kyle Kosier, Felix Jones, safety Roy Williams and punter Mat McBriar, and several other starters playing with injuries.

However, Davros had previously recruited one of the Spider Daleks as a sleeper agent for just such an eventuality, and even he was not certain in the end if he was being disintegrated or being teleported away to safety, leaving the possibility open for his return.

However, evidence came to light about safety concerns with the new drug which caused some insurers to stop funding it even though marketing approval was not withdrawn.

However the Agents ' first attempt is botched and they are forced to flee to safety.

However, some granites have been reported to have higher radioactivity thereby raising some concerns about their safety.

However, these lighting systems require large amounts of electricity to operate, making efficiency and safety very critical.

However safety issues continue to be problematic.

However, Jean's personality manages to take control and Phoenix commits suicide to ensure the universe's safety.

However, it returns to the pouch to sleep, and if danger threatens it will seek refuge in its mother's pouch for safety.

However the consumption of moose liver or kidneys significantly increased cadmium intake, with the study revealing that heavy consumers of moose organs have a relatively narrow safety margin below the levels which would probably cause adverse health effects.

However, even a capture cannot guarantee Player B's safety ; usually Player A can replace the piece of the tessera captured and Player B will be in the same predicament — but very probably without the benefit of a pair to capture.

However, the rule is now much more commonly observed for safety reasons.

However, there is debate concerning whether the quinolones still have such an adverse effect on the DNA of healthy cells, in the manner described above, hence contributing to their adverse safety profile.

However, there is controversy concerning the safety profile of quinolones, as well as their proper use.

However, a few days before the game, he received a verbal challenge from Dallas safety Cliff Harris, who stated " I'm not going to hurt anyone intentionally.

However, safety Darren Woodson was named to the Pro Bowl with 89 tackles and 2 interceptions for 46 return yards and a touchdown.

Mill notes that, contrary to what its critics might say, there is “ no known Epicurean theory of life which does not assign to the pleasures of the intellect … a much higher value as pleasures than to those of mere sensation .” However, he accepts that this is usually because the intellectual pleasures are thought to have circumstantial advantages, i. e. “ greater permanency, safety, uncostliness, & c .” Instead, Mill will argue that some pleasures are intrinsically better than others.

However, as most cars being imported from the mainland United States are left-hand drive, the driver sits to the outside of the road, raising traffic safety issues.

However, long term safety studies are absent.

However, the campaign was a failure, and on Gordian's eventual death Plotinus found himself abandoned in a hostile land, and only with difficulty found his way back to safety in Antioch.

However, there are apparently safeguards in place to prevent people from being beamed into hostile environments such as under water and into lava pits, although it is possible to override this safety feature ; for example, in the TOS episode " And the Children Shall Lead ", two security guards are beamed into open space.

However, this results in the supercharger being filled with compressed fuel / air mixture, with a strong tendency to explode should the engine backfire ; this type of explosion is frequently seen in drag races, which for safety reasons now incorporate pressure releasing blow-off plates on the intake manifold, breakaway bolts holding the supercharger to the manifold, and shrapnel-catching ballistic nylon blankets surrounding the superchargers.