D. greenhouse gases is the answer
They are similar because they are both corresponding bones of the arms and leg
Glycolysis evolved very early in ancestors that are common to all the domains of life.
This is because the site of glycolysis is cytoplasm which is present in both prokaryotes as well as eukaryotes.
As prokaryotes are the early ancestors of all domains of life therefore it is also considered that glycolysis is evolved very early.
Answer: a blacktop highway
