The units that participate in the Doctoral Program in Natural Sciences have the classrooms for the enrollment reached until the generation September 2014, there are classrooms for students with capacity for groups of 12 to 30 students. In addition, there are two seminar rooms which are generally also used as classrooms, with a capacity for 60 people. These rooms are equipped with air conditioning, lighting, plasma screen, blackboards and electronic screen. In reference to spaces, equipment and services, there is an infrastructure for the research activities of the following academic units of the Higher Education Division of Natural Sciences (DES CN Spanish initials for Dependencia de Educación Superior de Ciencias Naturales): a lecture hall auditorium for more than 150 people, where lectures are held, conferences and congresses such as the Students Congress of Doctoral Program in Natural Sciences. The Doctoral Program in Natural Sciences has 19 classrooms (12 in the Biological Sciences School, 4 in the CEIB (Spanish initials for Centro de Investigación en Biotecnología - Center for Research in Biotechnology -), 3 in the CIB (Spanish initials for Centro de Investigaciones Biológicas - Center for Research in Biology-) and 4 in the CIBYC (Spanish initials for Centro de Investigación en Biodiversidad y Conservación - Center for Biodiversity and Conservation Research-), with audiovisual equipment to teach. 104 individual or shared offices: 21 in the FCB (Spanish initials for School of Biological Sciences – Facultad de Ciencias Biológicas-), 15 in the CEIB, 43 in the CIB and 21 in the CIBYC), 4 meeting rooms, storage warehouses for material and equipment of field practices, a bioterium, spaces for the administrative work and attention to the students, 20 research laboratories (4 in the FCB, 1 in the CIB, 10 in the CEIB and 4 in the CIBYC). The teaching and research laboratories have biosecurity and security measures in accordance with the Official Mexican Standards (NOM Spanish initials for Normas Oficiales Mexicanas). Finally, there is a Biological Station in the Sierra de Huautla Biosphere Reserve, with bedrooms, dining room, kitchen, and auditorium. In addition, there are scientific collections of vertebrates (birds, amphibians, reptiles and mammals) and invertebrates and a herbarium where the students of the Doctoral Program in Natural Sciences develop the activities of their courses and research projects. The synergy of physical infrastructure is one of the most relevant strengths of the doctoral program. All units that are part of the Doctoral Program in Natural Sciences have an office for management and for the academic secretariat; offices for a) tutorials, b) university lecturers and researchers, c) extension secretariat, d) directors of different programs, e) assistants, f) administrative official of school services, g) directors of different programs and h) edition. They have reception spaces for secretaries, teaching laboratory, computer center and audio-visual rooms and teachers room. Considering this potential in infrastructure for teaching and research, the institution has made a commitment in the postgraduate development plan to provide adequate common spaces for the functions already mentioned, once considered the growth in the medium and long term as already mentioned above. For the teaching there are spaces for students, offices for guest professors and postdoctoral stays, administrative areas, meeting rooms (for meetings of academies and tutorials), auditorium for joint academic events inside the DES CN. Most research projects include the materials and supplies necessary for the proper development of the Program; In addition, the institution finances these items when the program so requests. Most of the available laboratory infrastructure is focused on research activities, once students begin their seminars, these laboratories are an important support in their training.