Complex sentence: All of the remaining functional elements in a human body are called "trace elements", which include iron, cobalt, copper, zinc, manganese, molybdenum, iodine, and selenium.
Split into simpler sentences: All of the remaining elements in a human body are called "trace elements". The trace elements that have a specific biochemical function in the human body are iron, cobalt, copper, zinc, manganese, molybdenum, iodine, and selenium.