Update requirements.txt

requirements.txt

@@ -1,3 +1,5 @@
-streamlit==1.26.0     # Main library for the web interface
-pandas==2.1.1         # For handling tabular data (fiber composition, results)
-plotly==5.15.0        # For 3D visualizations of water, energy, and carbon footprints
+streamlit==1.26.0       # Core library for the Streamlit web app
+pandas==2.1.1           # For handling and processing tabular dataset
+requests==2.31.0        # For downloading dataset from Google Drive
+openpyxl==3.1.2         # For processing Excel files
+plotly==5.15.0          # For creating interactive 3D visualizations