
1) Hydrogen production
Found on
https://www.crosswordclues.com/clue/biohydrogen

Biohydrogen is defined as hydrogen produced biologically, most commonly by algae, bacteria and archaea. Biohydrogen is a potential biofuel obtainable from both cultivation and from waste organic materials. ==Introduction== Currently, there is a huge demand of the chemical hydrogen. There is no log of the production volume and use of hydrogen world...
Found on
http://en.wikipedia.org/wiki/Biohydrogen
No exact match found.