Endocrine system is the answer
I believe the answer is B.
I am pretty sure that biologists use molecular clocks to try to measure <span>when two species separated from a shared ancestor. Do hope you still need the anwer because this one is definitely correct, do not hasitate to use it! Regards.</span>
Answer:
Cloud condensation nuclei or CCNs are small particles typically 0.2 µm, or 1/100 the size of a cloud droplet on which water vapor condenses. Water requires a non-gaseous surface to make the transition from a vapour to a liquid; this process is called condensation.
MAYBE I THINK ;)
