Humans have used bioenergy for thousands of years in the form of burning wood to make fire.
Harvesting hydropower poses a risk to fish and other aquatic life and when bioenergy comes from burning crops, harvesting the large amounts of crops needed to create fuel poses a risk to our food supply.
Bioenergy: Bioenergy, or biomass, is the energy created when something burns, typically plant material, although solid waste can be burned, too.
Ethanol fuel is also a form of bioenergy created by breaking down plants into starches and sugars, fermenting and creating a wood alcohol.
Bioenergy, or Biomass, occurs when natural products such as wood is burned.