What are macro-elements and trace elements?

Macro elements are the minerals of which the body needs more amounts and are more important than any other elements.The calcium, magnesium, sodium, chromium, cobalt, iodine, iron, selenium, manganese, and zinc seem to be low in type 2 diabetes while elements such as potassium and copper have no effect.Trace elements (or trace metals) are minerals present in living tissues in small amounts.

a chemical element present only in minute amounts in a particular sample or environment. is a trace element

The human reproductive system uterusthe bird reproductive system eggs dropped