Ritonga, I. and Simatupang, H. 2025. Pengaruh Model Problem Based Learning terhadap Kemampuan Argumentasi Ilmiah Peserta Didik pada Materi Ekosistem di Kelas X SMAN 2 Medan: (The Effect of Problem Based Learning Model on Students’ Scientific Argumentation Ability on Ecosystem Material in Class X SMAN 2 Medan). BIODIK. 11, 04 (Dec. 2025), 119–125. DOI:https://doi.org/10.22437/biodik.v11i04.46840.