Commonly known as whooping cough, the medical term for this bacterial infection of the upper respiratory tract is

its known as pertussis,caused by a bacteria called bordetella pertussis

the answer is cell division : )

i believe it's c. the trait for large beaks will be passed on to future generations through natural selection.

since eventually smaller beaks would have to find another source of food or even eventually just die out from the lack of food.