The cyclic adenosine monophoaphate, or the cAMP is a second messanger for multiple biological processes. The glucose, sugar and lipid metabolism is regulated by the cAMP or cyclic adenosine monophosphate. Itis the derivative of the ATP (Adenosine Triphosphate), and used for the purpose of the signal transduction. Besides this, the brain function is also affected by the cAMP.
I would assume a population with greater diversity would survive above quantity because of the varying difference in the genetic capabilities.
The shadow zone is the area of the earth from angular distances of 104 to 140 degrees from a given earthquake that does not receive any direct P waves. The shadow zone results from S waves being stopped entirely by the liquid core and P waves being bent (refracted) by the liquid core.