The principle that living organisms are produced only from other living organisms. / Biosynthesis.

biographical

(biology, geology, chemistry, ecology) The scientific study of biological, geological and chemical processes in the natural environment and especially of their mutual relationships

A mixture of methane and carbon dioxide, produced by anaerobic digestion of organic waste matter, used as a fuel

Of or pertaining to biogeochemistry

A geochemical of biological origin

biogenetic

Of or pertaining to biogenesis. / Of or pertaining to biogenetics.

plural of biogeochemist

A scholar in the field of biogeochemistry.