1) Charcoal 2) Soil improver
Found on
https://www.crosswordclues.com/clue/biochar
Biochar is a name for charcoal when it is used for particular purposes, especially as a soil amendment. Like all charcoal, biochar is created by pyrolysis of biomass. Biochar is under investigation as an approach to carbon sequestration to produce negative carbon dioxide emissions. Biochar thus has the potential to help mitigate climate change, vi...
Found on
http://en.wikipedia.org/wiki/Biochar
No exact match found.
