Biofuels made from plants can help reduce greenhouse gas emissions from transportation and industries. This review looked at different types of biofuels to see how they affect the environment. They found that the biggest impact on climate comes from making the biofuels, not using them. The quality of the plants used and the technology used to make the biofuels can change how much greenhouse gas is released. Making biofuels more efficiently and managing plant growth better can help lessen their impact on the climate.