I believe its your heart if I am not mistaken hope this helps ^^;
Compare the limbs of different organisms goes in left box. compares fossilized structures to living organisms left box.
other 2 go in the right box hope this helped(:
Answer:
If it helps, the answer is Mutualism (let me know if it is for some reason incorrect)
The answer is most likely c
The cell membrane consists of three classes of amphipathic lipids: phospholipids, glycolipids, and sterols. The amount of each depends upon the type of cell, but in the majority of cases phospholipids are the most abundant, often contributing for over 50% of all lipids in plasma membranes.
