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Sistema Sac Actun (Yucatec Maya: sak aktun, lit. 'white cave', Spanish : sistema , lit. 'system') is an underwater cave system situated along the Caribbean coast of the Yucatán Peninsula with passages to the north and west of the city of Tulum .
Aqueduct arches (65 m tall) over the Alcântara valley. Note the pointed shape of the arches. The aqueduct seen from the west. The Águas Livres Aqueduct (Portuguese: Aqueduto das Águas Livres, pronounced [ɐkɨˈðutu ðɐz ˈaɣwɐʒ ˈlivɾɨʃ], "Aqueduct of the Free Waters") is a historic aqueduct in the city of Lisbon, Portugal.
But there is no single optimal solution that will satisfy the global optimality of both objectives. As both objectives are to some extent contradictory, it is not possible to improve one objective without sacrificing the other. It is necessary in some cases use a different approach. (e.g. Pareto Analysis), and choose the best combination.
Neoaves is a clade that consists of all modern birds (Neornithes or Aves) with the exception of Palaeognathae (ratites and kin) and Galloanserae (ducks, chickens and kin). [4] ...
Ave Sangria is a Brazilian rock band and one of the leading names of the 1970s psychedelic music scene of Pernambuco, along with Alceu Valença, Flaviola e O Bando do Sol, Lula Côrtes, Marconi Notaro and Lailson.
Sistema Ox Bel Ha (Spanish: sistema, lit. 'system', Yucatec Maya: ox bel ha, lit. 'Three Paths of Water'; short Ox Bel Ha) is a cave system in Quintana Roo, Mexico.It is the longest explored underwater cave in the world [3] and ranks second including dry caves.
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Hierve el Aqua (Spanish for "the water boils") is a set of natural travertine rock formations in San Lorenzo Albarradas, Oaxaca, Mexico that resemble cascades of water. [1] [2] The site is located about 70 km east of Oaxaca City, [3] and consists of two rock shelves or cliffs which rise between fifty and ninety metres from the valley below, from which extend nearly white rock formations which ...