Biofuel production can come from plants, algae, and bacteria.
Biohydrogen is defined as hydrogen produced biologically, most commonly by algae, bacteria, and archaea. Species of the Clostridium genus allow hydrogen production, a potential biofuel, in mixed cultures.
Source
Boundless vets and curates high-quality, openly licensed content from around the Internet. This particular resource used the following sources:
"Algae hydrogen production."
http://en.wikipedia.org/wiki/File:Algae_hydrogen_production.jpg
Wikipedia
Public domain.
