The term used to describe the material that comes from living organisms is "biomass." Biomass encompasses a wide range of organic materials, including plant matter (like wood and crop residues), animal waste, and even some forms of algae. It serves as an important renewable energy source, as it can be converted into biofuels or used directly for heating and electricity generation. Biomass plays a significant role in sustainable practices, helping to reduce waste while providing alternative energy solutions. Its utilization can potentially lower greenhouse gas emissions and contribute to energy independence.