It's B! Hope this helped let me know if it was! (:
Protons! remember + equals positive.
Hair and nail growth are not homeostatically controlled. There is no miracle in using exuberance to handle these procedures. The disadvantage is that they can produce very long and interrupt normal activities.
To group species into larger categories that reflect lines of evolutionary descent. (i hope this right)
Answer:
There are three primary areas of the brain that control your sense of smell: The orbitofrontal cortex, located above and behind the eyes. The insula, which lies beneath the ears. The piriform cortex, located between the other two. Besides these three areas, there are smaller brain regions that also play a part in smell.