Fossil fuels and biofuels have a common geneses/origin, which is the absorption and fixation of carbon dioxide (CO₂) by plants using sunlight energy through the process of photosynthesis.

Fossil fuels and biofuels have a common geneses/origin, which is the absorption and fixation of carbon dioxide (CO₂) by plants using sunlight energy through the process of photosynthesis

Fossil fuels are formed through the fossilization of plant biomass produced by the photosynthesis of plants and other organic matter over millions of years, ultimately resulting in the formation of oil, gas, and other non-renewable derivatives. These products are extracted from subsoil, transported, and then refined into various forms of fossil fuels.

Once used, fossil fuels in this cycle release carbon dioxide (CO₂) and other greenhouse gases into the atmosphere. These old carbon greenhouse gases are released on a one-way trip to the atmosphere, increasing their amount in the atmosphere. They do not participate in the natural and renewable cycle of CO₂ uptake by plant photosynthesis.

Biofuels use biomass generated by plants as raw material, which is produced in cycles that typically last a few months. The biomass produced by plants is formed through photosynthesis, a process that uses sunlight to convert carbon dioxide into high-carbon compounds.

When these biofuels are used, they release carbon dioxide and other greenhouse gases into the atmosphere. However, these gases are eventually reabsorbed by plants during subsequent biomass production cycles. This results in a net change of no or lower CO₂ in the atmosphere, creating a continuous and renewable process.

The efficiency and benefits of a biofuel are determined by its lifecycle, which includes all stages of its existence. This encompasses the initial extraction of the feedstock, through to its final use, and ultimately its disposal or recycling. The lifecycle of a biofuel involves various activities, including resource extraction, transportation, production, distribution, and consumption. Understanding the biofuel lifecycle is essential for assessing its environmental impact and comparing its potential benefits to those of fossil fuels.