Here are entered works on evaluation of the condition of a body of water based on surveys and other measurements of the resident biota. Works on testing to determine the degree of pollution of water by comparing its effect on a living organism with the effect of a standard preparation are entered under Water quality bioassay.
Here are entered works on the study of naturally occurring chemical reactions in organisms. Works on the use of chemistry and chemical techniques to study biological systems are entered under Chemical biology. --subdivision Composition under individual animals and groups of animals, e.g. Fishes--Composition; Cattle--Composition
--subdivision Biodegradation under individual chemicals and groups of chemicals and individual materials and types of materials, e.g. Insulin--Biodegradation; Insecticides--Biodegradation; Metals--Biodegradation
--subdivisions Metabolism--Regulation, Secretion--Regulation, and Synthesis--Regulation under individual chemicals and groups of chemicals, e.g. Copper--Metabolism--Regulation; Copper--Secretion--Regulation; Insulin--Synthesis--Regulation; and subdivision Vocalization--Regulation under individual animals and groups of animals, e.g. Mammals--Vocalization--Regulation; Cattle--Vocalization--Regulation
--subdivision Biodegradation under individual chemicals and groups of chemicals and individual materials and types of materials, e.g. Insulin--Biodegradation; Insecticides--Biodegradation; Metals--Biodegradation
--subdivision Biodegradation under individual chemicals and groups of chemicals and individual materials and types of materials, e.g. Insulin--Biodegradation; Insecticides--Biodegradation; Metals--Biodegradation
--subdivision Biodegradation under individual chemicals and groups of chemicals and individual materials and types of materials, e.g. Insulin--Biodegradation; Insecticides--Biodegradation; Metals--Biodegradation
