Paribesh Bigyan: A Text of Environmental Science For Four Year’s Degree Course (NEP, 2020 Semister System, B.A., B.Sc, B.Com) prepared as per the NEP, 2020 System of all the Universities of West Bengal and Tripura, written by Dr. Binay Barman (Ph.D), Assistant Professor, Department of History, Saldiha College, Bankura. Sudip Sahana, Assistant Professor, Department of Chemistry, Saldiha College, Bankura.