<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>
The theory of evolution was proposed by Charles Darwin and was first formulated in his book, "Origin of Species" in 1859. It focuses on the changes in species and populations over time
