Answer:
I think so this is the answer
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(:
In the mitochondria of the cell
The biological levels of organization of living things arranged from the simplest to most complex are: organelle, cells, tissues, organs, organ systems, organisms, populations, communities, ecosystem, and biosphere.
SO CELLS, ORGANS, SYSTEM AND ORGANISMS I GUESS?