organic matter
General term for matter derived from living organisms, often contrasted with 無機物 (inorganic matter).
See also: 無機物
The soil contains a lot of organic matter.
Chemistry term; a compound containing carbon, typically found in or produced by living organisms. See also 有機化合物.
See also: 有機化合物
This organic compound decomposes under certain conditions.
Microorganisms break down the organic matter in the soil.
This soil contains a lot of organic matter.