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.
Humans have used bioenergy for thousands of years in the form of burning wood to make fire.
Bioenergy, or Biomass, occurs when natural products such as wood is burned.