<span>The answer for this question would be: a portion of the heme group
Stercobilin is metabolized from heme of the hemoglobin. Iron from hemoglobin will be recycled and the heme part will turn into bilirubin which will be dump into feses. Inside intestine, bilirubin will be converted into urobilinogen then oxidized into stercobilin</span>
A. A valley forms in the ocean floor as two seafloor plates move apart.
Hydrogen and helium are the two most abundant elements in the sun.