What are bio fuels made of?

Biofuels are made from organic materials, primarily plant-based sources, such as crops, agricultural residues, and waste. Common types of biofuels include ethanol, produced from fermenting sugars found in corn or sugarcane, and biodiesel, derived from vegetable oils or animal fats through a process called transesterification. Additionally, biofuels can also be produced from algae and other biomass sources. These renewable energy sources aim to reduce reliance on fossil fuels and lower greenhouse gas emissions.