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The first ancestors of fish may have kept the larval form into adulthood as some sea squirts do today , although this path cannot be proven. Vertebrates , among them the first fishes , originated about million years ago during the Cambrian explosion , which saw the rise in organism diversity. Pikaia had a primitive notochord , a structure that could have developed into a vertebral column later. Unlike the other fauna that dominated the Cambrian, these groups had the basic vertebrate body plan : a notochord , rudimentary vertebrae, and a well-defined head and tail. The first jawed vertebrates appeared in the late Ordovician and became common in the Devonian , often known as the "Age of Fishes". The Devonian also saw the rise of the first labyrinthodonts , which was a transitional between fishes and amphibians. The colonisation of new niches resulted in diversification of body plans and sometimes an increase in size. The Devonian Period to Ma brought in such giants as the placoderm Dunkleosteus , which could grow up to seven meters long, and early air-breathing fish that could remain on land for extended periods. Among this latter group were ancestral amphibians. The reptiles appeared from labyrinthodonts in the subsequent Carboniferous period. Differences And Similarities Between Elbow And Stanley Fish

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The United Nations and its many agencies and programs are ultimately funded by taxpayers but they are too far removed from those taxpayers to be directly accountable to them. But who will discipline the UN? Behween theory ensures that no single country will venture to absorb the cost of disciplining the UN while gaining only pro-rata benefits.

Differences And Similarities Between Elbow And Stanley Fish

Under these conditions they can morph into bureaucratic organisms that operate for their own needs and no longer serve the public interest. A case study of the UNEP and its related agencies, programs, framework conventions, and protocols exposes structural weaknesses that allowed the bureaucracy to extract rents and grow by selling environmental fear and assigning themselves the high office of saving the planet. This sequence was played out in two different episodes. In the first episode a fear of ozone depletion was sold and after successfully implementing a worldwide ban on alleged ozone depleting substances, the UN declared victory even though no evidence exists of long term trends in latitudinally averaged global mean total column ozone. The absence of trends indicates that the problem that was solved never existed in the first place.

Differences And Similarities Between Elbow And Stanley Fish

In the second episode, they sold fear of catastrophic global warming and climate change allegedly caused by fossil fuel emissions but failed to duplicate their success in the first episode because their own bureaucratic incompetence created an emissions reduction plan that was too complicated too costly to implement. These barriers ensured an endless series of annual meetings of thousands of delegates at exotic locations with the only concrete achievement of each meeting being that of setting the date and place for the next meeting. These episodes serve as evidence that unconstrained and undisciplined public sector bureaucracies do not serve the interest of the public.

They can therefore be safely dismantled without any harm to the public interest. The United Nations is financed mostly by taxpayers from a few donor countries but the large and growing bureaucracy is too far removed from those taxpayers to be directly accountable to them.

Differences And Similarities Between Elbow And Stanley Fish

It is run by unelected, unaccountable, undisciplined, and incompetent bureaucrats. The budget funding process provides perverse incentives for these bureaucrats to increase the size and scope of their organization simply by creating multitudes of agencies and programs, Differences And Similarities Between Elbow And Stanley Fish by inventing problems and environmental crises set on a global scale. The remarkable success of the EPA of the USA made it a model for environmental law and environmental protection in countries around the go here Ruckelshaus, Andreen, Dolin, It was in this context that renowned Canadian environmentalist and visionary Maurice Betseen saw the need for a global version of the EPA that could work at a planetary level with a global reach unhindered by national boundaries Ward, Similaritoes He convened the UN meeting on the environment in Stockholm in The UNEP quickly became the nucleus of a large and growing cluster of United Nations agencies, secretariats, programs, frameworks, conventions, protocols, and conferences.

A series of events that began in the s and culminated in provided them with just such an opportunity. In the s, environmentalist James Lovelock, the man who had invented the idea of environmentalism on a planetary scale in terms of the Gaia read more Lovelock, was concerned about the atmospheric release of halogenated Ans HHC that were used as refrigerants, as propellants for household liquids such as hairspray, and as fumigants in agriculture.

His concern was that these man-made chemicals did not otherwise occur in nature and that they were chemically inert. The latter property implied that their release into the atmosphere, even at modest rates, could cause dangerous accumulation.

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This idea was empirically verified when Lovelock found these chemicals in air samples taken in the middle of the North Atlantic Lovelock, The catalytic mechanism involves an intermediate step in which chlorine released from HHC causes ozone to dissociate Stolarski, High energy UVC radiation causes oxygen to dissociate into charged free radicals. Their chance collision with other oxygen molecules forms ozone but their read more collision with ozone causes ozone destruction; but the much higher probability of collisions with oxygen creates an equilibrium inventory of ozone in the stratosphere.

The equilibrium inventory is lowered somewhat by UVB radiation which destroys ozone. In that process UVB becomes completely absorbed in the stratosphere thereby saving life on the surface of the earth from the harmful effects of UVB radiation Beder, Caldwell, DeGruijl, Armstrong, Cullen, Allen, Tevini, It is in this context that we can understand the fear of ozone depletion by anthropogenic air pollution as described by Differences And Similarities Between Elbow And Stanley Fish and Molina in terms of the Lovelock data.

If HHC emissions cause ozone depletion in the stratospheric ozone layer, the equilibrium inventory of ozone will decline and compromise the ability of the ozone layer to protect life on Elbw from UVB radiation. HHC emissions can thus be seen as a kind of air pollution on a planetary scale. This kind of planetary air pollution together with its adverse effects on the biosphere on a global scale was just the kind of thing that the UNEP needed not only to justify its existence but to grow in size, importance, and funding.]

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