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A biological system is a complex network which connects several biologically relevant entities. Biological organization spans several scales and are determined based different structures depending on what the system is. [1]
In a multicellular organism, an organ is a collection of tissues joined in a structural unit to serve a common function. [1] In the hierarchy of life, an organ lies between tissue and an organ system.
Sierra de Órganos is nestled within the Sierra Madre Occidental mountain range, in an area that corresponds to the physiographic province of the Mexican Plateau. The topography is uneven, with elevations ranging from 2,120 to 2,560 metres (6,960 to 8,400 ft) above sea level. [ 1 ]
The Sierra is the western part of Guaniguanico and spans from Guane to the San Diego River, in the municipality of Los Palacios. [citation needed] The other municipalities including the range are Mantua, San Juan y Martínez, Minas de Matahambre, Viñales, Pinar del Río, Consolación del Sur and La Palma.