Biomass is all biologically produced matter based in carbon, hydrogen and oxygen.

The steroids and sterols in animals are biologically produced from terpenoid precursors.

It simply means it is a biologically produced poison.

"It's a very strong indication this was a biologically produced sulfide," Dr. Canfield said.

In other words, it is our biologically produced visual system that makes our perceptual experiences meaningful.

Biologically produced sulfur particles are naturally hydrophilic due to a biopolymer coating.

Biosulfur (biologically produced elemental sulfur with hydrophilic characteristics) can be used well for these applications.

A chain configuration, they point out, is one of the most distinguishing characteristics of biologically produced magnetite crystals.

This polymer can be produced biologically by the bacteria Alcaligenes eutrophus.

There is no chemical difference between biologically produced and chemically produced alcohols.