Term Name:	response to decreased oxygen levels
Synonyms:	response to lowered oxygen levels
Definition:	Any process that results in a change in state or activity of a cell or an organism (in terms of movement, secretion, enzyme production, gene expression, etc.) as a result of a stimulus reflecting a decline in the level of oxygen.
Ontology:	GO: Biological Process [GO:0036293]    QuickGO    AmiGO