EARTH SCIENCE > TERRESTRIAL HYDROSPHERE > WATER QUALITY/WATER CHEMISTRY > NUTRIENTS
Nutrients are elements essential for growth and survival of a given organism.
Directly or indirectly, nutrients have roles in metabolism that no
other nutrients fulfills.
Starr, C. and R.Taggart. 1998. Biology: the unity and diversity of life.
Wadsworth Publishing Company. Belmont, California.