Zinc,selenium,cobalt,and Iodine are All

Question

Zinc,selenium,cobalt,and iodine are all
A) trace elements.
B) compounds.
C) radioactive.
D) isotopes of hydrogen.

Accepted Answer

Zinc, selenium, cobalt, and iodine are all elements that are required in very small amounts (usually less than 100 milligrams per day) in the human diet. As such, they are referred to as trace elements.