False. Think about how teachers have air conditioners on the top of the windows and how air balloons float up!! Therefore warm hair is lighter then cold air.
Its stabilising. Since the selection pressure is against the extremes which are the normal blood and the sickle cell anaemia.
The correct answer that would complete the given statement above is cerebral cortex. The outermost layer of the brain, the cerebral cortex, is housed in the cerebrum. The cerebral cortex consists of folded gray matter. It is responsible for the interpretation of input from different sources. <span>The </span>cerebral cortex<span> lobes include the parietal, frontal, occipital and temporal lobes.</span>