Blood flow through the ears allowing for heat dissipation!!!!!
The wave theory of light is the idea, supported by a number of scientists over the years, that light behaves as waves. It has been superseded by Quantum theory, which says (in part) that light sometimes behaves like a particle and sometimes like a wave.
Answer:
It results in genetic variation in the species
If they are not the exact same then this may lead to the synthesis of the wrong proteins
