Chemical elements which are involved in the construction of living tissue and which are needed by both plant and animal. The most important in terms of bulk are carbon, hydrogen and oxygen, with other essential ones including nitrogen, potassium, calcium, sulphur and phosphorus.
A process in animals and plants involving the intake of nutrient materials and their subsequent assimilation into the tissues.
the organic process by which an organism assimilates food and uses it for growth and maintenance
the scientific study of food and drink (especially in humans)
a source of materials to nourish the body
(physiology) the organic process of nourishing or being nourished; the processes by which an organism assimilates food and uses it for growth and maintenance
