Answer:
The humoral immune response involves mainly B cells and takes place in blood and lymph.
Explanation:
Answer:
I believe the answer is D or B.
Explanation:
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(:
The fossil record indicates that the earliest hominids most likely originated in "Africa," since this is the location from which humans eventually migrated to other locations.
