Highlighting mathematical and physico-chemical concepts which can generate epistemological obstacles in biology courses: A case study of ecologyNour-eddine Zghida, Mhamed Ben Ouahi, Hamid Saufi, Soukaina Chaer Najib and Mouad ChatSHS Web Conf., 214 (2025) 01007DOI: https://doi.org/10.1051/shsconf/202521401007