This phenomenon also brings as consequence the fact of that in the hemisphere where the day is summer it is presented longer than in the hemisphere where is winter, where the nights are that they will be longer. In only two occasions throughout the year the Land reaches the specific position where the inclination of its axle of rotation confers an act of receiving of solar light uniform in both the hemispheres (ASIMOV, 1979). In such a way it has an equitable duration between day clearly and night (equinoxes of spring and autumn; the proper term equinox means ‘ ‘ nights iguais’ ‘). Differences of decurrent temperatures of different distanciamento in each hemisphere Even so the existence of the inclination of the axle of rotation of the Land is the true explanation for the phenomenon of the stations of the year? orbital differences not involving alterations of distanciamento of the Land to the Sun? errors of interpretation or insufficience of data can still lead to other errors. TODAY gathered all the information. Some didactic books, exactly giving the correct explanation affirming that the stations of the year must to the inclination of the axle of rotation of the Land, can leave the impression of that the temperature differences occur because data hemisphere of the Land are next to the Sun to the step that other is more distant. As the Land has about 12.756 kilometers of diameter (ASIMOV, 1979) the alteration of distance to the Sun enters the hemisphere next to star and the hemisphere most distant would be of, in the maximum, some thousands of kilometers. If this difference was enough to produce temperature alterations perceivable? e, therefore, worthy of being led in account? the phenomenon of the differences of distanciamento of the Land to the Sun throughout its orbit would be true to explain the stations of the year, since such changes are of the order of 147 million kilometers in the perihelion the 152 million in the aphelion, what of the one difference of 5 million kilometers in the distance of the Land to the Sun. ..
The word ' ' desenvolvimento' ' it estimates: to promote progress, economic development, to progress, to expand, here it is the first point that to valeressaltar, some questionings on its meaning, this concept for sis allows to promote progress? If, promoveprogresso, promotes for who? Who is assumen of the natural resources? Quemusufrui of the wealth produced from these resources? All this perguntasso answered when we see, for example, what these great projects in the Amazniatinham as the objective that in thesis was to take development for this regioe, what in fact had brought, had been serious ambient and social problems. Emverdade the concept development is not configured in its fullness. The ditodesenvolvimento is so only applied to the economic growth, crescimentoesse come back only toward the accumulation of the world-wide capital and with the effective falsonacionalismo during the military regimen, the Amazon region was aviltadaatravs of the Great mineral and farming Projects and the populations tradicionaisno had the right of joy of these produced wealth. In this context, and the heat of the quarrels between osdesenvolvimentistas and the ambientalistas another concept appears ' ' DesenvolvimentoSustentvel' ' (DS), this appeared in function of the countless quarrels conceituaisem who would have to be contemplated, as being the basic one, if the Man or the MeioAmbiente. Here it is that the mediator appears of this paradigm, with the attempt you intermediate quarrels and to chagar to a universal consensus. This shock between desenvolvimentistas and ambientalistas of carterparticularmente ideological that contemplate the aspirations of economic groups, are not in its depleted fullness, still have many quarrels to be stopped, therefore, many conceptual contradictions exist due not the clarity of the same ones. Evidentementeque the said sustainable development is not completely a failure, to vamosdizer thus, therefore, it represents an advance in the use of the sustainable term quandocomparado with the use of the term development in face of the proper evolution. .