Biodegradation vs. Photodegradation — What's the Difference?

Biodegradation is the breakdown of organic matter by microorganisms, such as bacteria and fungi.

Photodegradation is the alteration of materials by light. Commonly, the term is used loosely to refer to the combined action of sunlight and air, which cause oxidation and hydrolysis.

Capable of being decomposed by biological agents, especially bacteria

Any reduction or degradation in a useful property of a material because of a chemical change as a result of absorption of light.

The decomposition of any material by microorganisms.