ABSTRACT
Plants harness energy from the sun and transfer it through the food cycle. Although nonmetals such as carbon, hydrogen, nitrogen, and oxygen are key elements synthesized to complex molecules during this process, other metals and nonmetals are also used in varying amounts. As a result, energy is transferred along with a range of metals and nonmetals in foods of plant origin. Animals and humans not only use the trapped energy in food by breaking complex molecules to simpler ones, but they also absorb and make use of the accompanying metallic and nonmetallic elements.
