Sitompul, Nurlaila, and Zunaidy Abdullah Siregar. “Analysis of Impacts and Challenges of Online Learning During the Covid-19 Pandemic: A Case Study at SMA Negeri 2 Rantau Selatan”. Bioscientist : Jurnal Ilmiah Biologi, vol. 12, no. 1, June 2024, pp. 1202-14, doi:10.33394/bioscientist.v12i1.10946.