ANALYSIS OF FACTORS CAUSING LEARNING DIFFICULTIES AMONG  BIOLOGY STUDENTS AT UNIVERSITAS NEGERI MEDAN  IN THE ANIMAL DEVELOPMENT COURSE. Jurnal Pelita Pendidikan, [S. l.], v. 14, n. 1, p. 13–20, 2026. DOI: 10.24114/ek470d47. Disponível em: https://jurnal.unimed.ac.id/2012/index.php/pelita/article/view/75809. Acesso em: 22 jul. 2026.